Miscellaneous
Analysis Tools
MAC Address Analyzer - Analyze any MAC address to identify manufacturer, validate format, decode structure (OUI/NIC), determine unicast/multicast and UAA/LAA status with visual breakdown and comprehensive network details. Featured
Password Strength Tester - Analyze password strength with real-time security scoring, entropy calculation, time-to-crack estimation, and detailed improvement suggestions. Test your password security instantly.
Area Converters
Acreage Calculator - Calculate land acreage from dimensions in feet, meters, or yards. Supports rectangular, triangular, and circular shapes with step-by-step calculations, visual diagrams, and comprehensive unit conversions.
Acres to Hectares Converter - Convert acres to hectares instantly with step-by-step formula, visual area comparisons, bidirectional conversion, and a comprehensive reference table. Supports international number formats.
Acres to Perches Converter - Convert acres to perches instantly with interactive visual land area comparison, bidirectional conversion, step-by-step calculations, and historical unit context for surveyors and property owners.
Acres to Square Feet Converter - Convert acres to square feet instantly with visual land area comparison, common property size examples, step-by-step calculation, and comprehensive area conversion reference.
Acres to Square Meters Converter - Convert acres to square meters instantly with visual land size comparisons, bidirectional conversion, common presets, and step-by-step formula breakdown.
Acres to Square Miles Converter - Convert acres to square miles instantly with visual comparisons, step-by-step calculations, and a comprehensive conversion table for land area measurements.
Acres to Square Yards Converter - Convert acres to square yards instantly. Features bidirectional conversion, step-by-step formula, common conversion table, real-world area comparisons, and multi-unit cross-reference.
Hectares to Acres Converter - Convert hectares to acres instantly with visual size comparisons, real-world examples like football fields and farms, plus comprehensive unit conversions including square meters and square feet.
Perches to Acres Converter - Convert perches to acres and acres to perches with visual area comparison, step-by-step calculation, and comprehensive conversion reference table for land measurement.
Square Feet to Acres Converter - Convert square feet to acres instantly with visual area comparison, real-world examples, and step-by-step conversion. Perfect for real estate, land surveys, and property calculations.
Square Meters to Acres Converter - Convert square meters to acres with instant results, visual area comparison diagrams, real-world size references, and comprehensive conversion tables. Free online area converter with land size classification.
Square Miles to Acres Converter - Convert square miles to acres instantly with step-by-step calculations, visual scale comparison, real-world examples, and bidirectional conversion between square miles and acres.
Square Yards to Acres Converter - Convert square yards to acres and acres to square yards instantly. Features visual size comparisons, step-by-step calculations, and multi-unit conversions for land measurement.
Audio Tools
Audio Extractor - Extract audio tracks from your video files online. Select output format (MP3, WAV, AAC, OGG). Client-side processing. New
Audio Splitter - Professional audio splitter tool to split and cut audio files online. Supports MP3, WAV, M4A, FLAC, OGG, AAC, WMA and other formats. 100% free, client-side processing ensures privacy. No upload required. New
MP3 Looper - Loop any section of your MP3 files with visual waveform display, precise A/B markers, playback speed control, and real-time preview. Set exact loop points, adjust tempo for practice, and export as MP3. All processing happens in your browser for complete privacy. Featured
MP3 Reverser - Reverse your MP3 audio file instantly with our free online tool. Upload any MP3 file up to 10MB, preview both original and reversed audio with waveform visualization, and download the result. Privacy-focused - we never store your files.
Chemical Calculators
Corrected Calcium Calculator - Calculate corrected calcium level adjusted for albumin with multiple formulas (Payne, modified), clinical interpretation, visual calcium distribution diagram, and step-by-step calculation breakdown.
Corrected Sodium Calculator - Calculate corrected sodium for hyperglycemia using Katz and Hillier formulas. Includes clinical interpretation, step-by-step calculations, and severity assessment for DKA and HHS management.
Molar Mass Calculator - Calculate the molar mass of any chemical compound with detailed element breakdown, percentage composition, step-by-step calculations, and interactive periodic table. New
Molarity Calculator - Calculate molarity (M), mass of solute, or volume of solution with step-by-step formulas. Features common compound database, unit conversion, and dilution calculator. New
pH Calculator - Calculate pH values from hydrogen ion concentration [H+], pOH, or scientific notation with interactive pH scale visualization and detailed step-by-step calculations. New
Color Tools
CMYK to Hex Converter - Convert CMYK (Cyan, Magenta, Yellow, Black) color values to Hex code with real-time preview, RGB breakdown, step-by-step conversion, color harmony suggestions, and multiple output formats for web and print design.
Color Contrast Checker - Check color contrast ratios between text and background colors. Test WCAG 2.x AA/AAA compliance for normal and large text with real-time preview, color suggestions, and detailed accessibility analysis.
Color Inverter - Invert colors instantly with our free online tool. Supports HEX, RGB, HSL, CMYK formats with live preview, color wheel visualization, accessibility contrast checker (WCAG), and complementary color generation. New
Color Scheme Generator - Generate professional color schemes with complementary, analogous, triadic, split-complementary, square, and tetradic harmonies. Interactive color wheel, real-time preview, CSS/Tailwind export, and accessibility contrast checker.
Gradient Generator - Professional CSS gradient generator with interactive color stops, angle control, preset gradients, and instant code export for CSS, Tailwind, and SVG.
Hex to CMYK Converter - Convert HEX color codes to CMYK (Cyan, Magenta, Yellow, Key/Black) values for print production with visual ink breakdown, step-by-step formulas, and print preview simulation.
Hex to RGB Converter - Convert hexadecimal (hex) color codes to RGB, RGBA, HSL, HSLA, and CMYK values with real-time color preview, complementary colors, shades generator, and one-click copy functionality.
Image Color Picker - Upload any image and instantly pick colors with precision. Get HEX, RGB, HSL, and CMYK codes, extract color palettes, and discover color harmonies - all in one powerful tool. New
Palette Generator - Generate beautiful, harmonious color palettes based on color theory. Create analogous, complementary, triadic, split-complementary, tetradic, and monochromatic color schemes with export options for CSS, SCSS, JSON, and Tailwind. New
Random Color Generator - Generate random colors instantly with HEX, RGB, and HSL formats. Create color palettes, explore color harmonies, copy color codes with one click, and discover beautiful color combinations for your designs.
Random Color Palette Generator - Generate beautiful, harmonious color palettes instantly. Choose from 6 color harmony modes, lock your favorite colors, and export in HEX, RGB, HSL, and CMYK formats. Perfect for designers, artists, and developers. New
RGB to Hex Converter - Convert RGB to hex color code instantly with live preview, multi-format output (HSL, HSV, CMYK), CSS code snippets, color harmony palettes, WCAG contrast checker, and nearest named color matching.
Construction And DIY Calculators
Board Foot Calculator - Calculate lumber volume in board feet with 25+ wood species, cost estimation, weight calculations, and 3D visualization. Perfect for woodworkers, contractors, and DIY enthusiasts. New
Brick and Mortar Calculator - Calculate how many bricks and how much mortar you need for your wall project. Supports doors/windows, multiple brick sizes, bond patterns, and cost estimation. New
Concrete Calculator - Calculate concrete volume in cubic yards, meters, and feet for slabs, footings, columns, and stairs. Get pre-mix bag counts, ready-mix estimates, material costs, and professional tips for your project. New
Decking Calculator - Calculate all materials needed for your deck project including decking boards, joists, beams, posts, and fasteners. Features interactive SVG diagram, waste allowance, and support for both imperial and metric units. New
Drywall Calculator - Calculate the number of drywall sheets needed for walls and ceilings, plus estimates for joint compound, tape, and screws. Supports imperial and metric units with multiple sheet sizes and customizable waste allowance. New
Fence Calculator - Calculate fence materials including posts, rails, pickets, panels, concrete, and hardware with visual diagrams. Supports privacy, picket, post & rail, and panel fence styles. New
Flooring Calculator - Calculate flooring material needed for any room with our free flooring calculator. Supports hardwood, laminate, vinyl, tile, and carpet. Get box/roll counts, cost estimates, waste allowance, and multi-room totals with visual diagrams. New
Miter Angle Calculator - Calculate the precise miter and bevel angles for cutting trim, baseboard, crown molding, and picture frames at any corner angle. Includes interactive angle diagram, step-by-step formulas, saw setup instructions, and common reference angles. New
Mulch, Soil & Gravel Calculator - Calculate how much mulch, topsoil, gravel, or sand you need for your landscaping project. Get accurate volume in cubic yards/meters, weight estimates, bag counts, and delivery truck loads with interactive 3D visualization. New
Paint Calculator - Calculate exactly how much paint you need for your room with smart coverage estimation. Includes walls, ceiling, and trim calculations with automatic door/window deductions, multiple coat support, texture adjustments, and shopping list with various can sizes. New
Roof Pitch Calculator - Calculate roof pitch (slope), angle in degrees, and rafter length from rise and run or span. Interactive visual diagram, multiple calculation modes, and professional results for roofing, carpentry, and construction projects. New
Roofing Calculator - Calculate roofing materials for your project including shingles, metal sheets, tiles, or underlayment. Features roof pitch calculator, waste factor adjustment, visual roof diagrams, and material quantity estimation with step-by-step calculations. New
Slope and Grade Calculator - Calculate slope as a percentage, ratio, or angle from rise and run, or reverse-calculate missing dimensions from a known slope. Includes ADA compliance checking, steepness gauge, step-by-step solutions, and application-specific recommendations for ramps, drainage, driveways, and roofing. New
Squareness Checker (3-4-5 Rule) 📐 - Use the 3-4-5 rule (Pythagorean theorem) to verify if a corner is perfectly square (90 degrees) for foundations, framing, and layout work with instant accuracy feedback and visual diagrams. New
Stair Calculator - Calculate stair dimensions including number of steps, rise, run, stringer length, and angle. Verify building code compliance with IRC standards for safe and comfortable staircase design. Supports US Customary and Metric units with automatic optimization or manual step count. New
Stud Wall Framing Calculator - Calculate the exact number of studs, plates, and lumber needed for wall framing projects. Features interactive wall diagrams, support for openings (doors/windows), cost estimation, and professional framing tips for 16" or 24" on-center spacing. New
Tile Calculator - Calculate exactly how many tiles you need for floors or walls. Get complete material estimates including grout, adhesive, and cost calculations. New
Wallpaper Calculator - Calculate how many wallpaper rolls you need for any room. Our calculator considers wall dimensions, pattern repeat, doors and windows, and waste allowance for accurate material estimates that help you save money and avoid running short. New
Cooking Tools
Baker's Percentage Calculator - Calculate and scale bread recipes using baker's percentages. Convert ingredient weights relative to flour weight, adjust hydration levels, and create perfectly proportioned dough every time. Essential for bakers and bread makers. New
Baking Pan Size Converter - Convert recipe ingredient amounts when changing baking pan sizes. Easily switch between round, square, rectangular, and specialty pans with automatic area calculations and ingredient scaling. New
Brine and Salinity Calculator - Calculate the precise amount of salt needed for pickling, brining, curing, or fermentation based on your desired salinity percentage. Supports multiple salt types with automatic density conversion. New
Cheese Board Calculator - Calculate exactly how much hard cheese, soft cheese, crackers, cured meats, fruits, and accompaniments you need for a cheese board based on guest count, occasion, and appetite. Get a complete shopping list with per-person breakdowns and board assembly tips. New
Chocolate Fountain Calculator - Calculate the exact amount of chocolate, oil, and dipping items needed for your chocolate fountain based on fountain size, guest count, chocolate type, and event duration. Get a complete shopping list with quantities for strawberries, marshmallows, pretzels, and more. New
Dough Hydration Calculator - Calculate dough hydration level (water-to-flour ratio) for perfect bread texture. Features visual dough consistency preview, baker's percentages, and full recipe generator for artisan bread, pizza, bagels, and more. New
Spaghetti Portion Calculator - Calculate the exact diameter of your dry spaghetti bundle for any number of servings. Features an interactive on-screen circle guide you can hold your pasta bundle against. Supports spaghetti, angel hair, linguine, fettuccine, bucatini, and more. New
Taco Bar Calculator - Calculate exactly how many tortillas, pounds of seasoned meat, cheese, salsa, guacamole, and toppings you need per person for a DIY taco bar. Get a complete shopping list with quantities for any group size. New
Yeast Conversion Calculator - Easily convert between fresh yeast, active dry yeast, and instant yeast with precise ratios. Perfect for bakers who need to substitute different yeast types in bread, pizza dough, and pastry recipes. New
Craft Tools
Cross-Stitch Size Calculator - Calculate the finished size of your cross-stitch embroidery project based on your pattern stitch count and fabric count (Aida, evenweave, linen). Supports multiple fabric types, includes margins for framing, and provides size in inches, centimeters, and millimeters. New
Fabric Calculator - Calculate the exact amount of fabric needed for sewing projects, quilting blocks, garments, and home decor. Features pattern layout visualization, waste minimization, directional print support, and detailed cutting diagrams. New
Yarn Calculator - Calculate how much yarn (yards/meters) you need for sweaters, blankets, scarves, and other knitting or crochet projects. Estimates based on yarn weight, gauge, project size, and stitch pattern. New
DIY & Crafts
Candle Wax & Fragrance Oil Calculator - Calculate the exact amount of wax needed for your candle container and determine the correct fragrance oil percentage. Features animated candle visualization, supports multiple wax types, container shapes, and batch calculations. New
Soap Making Lye Calculator (SAP) - Calculate the precise amount of lye (NaOH or KOH) needed for soap making with accurate saponification values for 40+ oils. Includes superfat calculation, water ratios, dual lye support, and safety guidelines for cold process and hot process soap. New
Electronics Tools
Battery Life Calculator - Calculate how long a battery will last based on capacity (mAh/Ah/Wh) and device consumption (mA/A/W). Features animated battery visualization, efficiency adjustments, and detailed runtime breakdowns for phones, laptops, IoT devices, and more. New
Ohm's Law Calculator - Calculate any electrical value (Voltage, Current, Resistance, Power) using Ohm's Law. Enter any two known values to instantly compute the other two with detailed formulas and step-by-step solutions. New
PCB Trace Width Calculator - Calculate the required trace width for your printed circuit board (PCB) based on current, temperature rise, and copper weight using IPC-2221 standard formulas. Includes visual trace preview, resistance calculation, and voltage drop analysis. New
Resistor Color Code Calculator - Calculate resistance values from color bands with an interactive visual resistor diagram. Supports 4-band, 5-band, and 6-band resistors with real-time updates, tolerance ranges, and detailed explanations. New
Voltage Drop Calculator - Calculate voltage drop in electrical wires based on wire type (copper/aluminum), AWG size, length, and load current. Essential for safe electrical installations, NEC compliance, and preventing power loss in residential, commercial, and industrial wiring. New
Encoders And Decoders
Base64 Decoder - Decode Base64 encoded strings to plain text with detailed byte analysis, character breakdown, multiple output formats (text, hex, binary), URL-safe support, and encoding validation.
Base64 Encoder - Encode text or files to Base64 with multiple encoding variants (Standard, URL-safe, MIME), real-time preview, encoding process visualization, and one-click copy. Supports UTF-8, ASCII, and binary data.
JWT Decoder - Decode JSON Web Tokens (JWT) to view the header and payload claims without verifying the signature. Visualize token structure, analyze claims, check expiration times, and debug authentication issues easily. 100% client-side processing for privacy. New
Morse Code Decoder - Decode Morse code to text instantly. Features visual Morse code chart, audio preview, and step-by-step decoding breakdown for easy learning.
Morse Code Generator - Convert text to morse code with visual breakdown and audio playback. Learn International Morse Code with step-by-step character translation and sound generation. Featured
URL Decoder - Decode URL-encoded (percent-encoded) strings with real-time preview, recursive multi-layer decoding, URL component breakdown, query parameter parsing, and encoding analysis. Supports UTF-8 and all percent-encoded characters.
URL Encoder - Encode text for URLs with multiple encoding modes (RFC 3986, Query String, Form Data), visual character-by-character breakdown, and comprehensive encoding analysis. See exactly which characters get encoded and why.
File Conversion
HEIC to JPG Converter - Convert HEIC/HEIF images to JPG format instantly in your browser. Batch conversion, adjustable quality, file size comparison, and image preview. 100% free, private, and no upload required.
HEIC to PNG Converter - Convert HEIC/HEIF images to PNG format instantly. 100% client-side processing ensures your photos never leave your device. Supports batch conversion with ZIP download.
Forex Tools
Major Forex Pairs Order Generator - Generate forex trading orders for 28 major currency pairs based on your currency strength analysis. Select LONG, SHORT, or NO ENTRY for each currency and get optimized trading signals.
Random Forex Pairs Order Generator - Generate random LONG or SHORT forex trading orders for 28 major currency pairs. Perfect for paper trading practice, strategy testing, and eliminating emotional bias in trading simulations.
Fun
Christmas Tree Calculator - Calculate the exact length of lights, number of baubles, tinsel, and ribbon needed for your Christmas tree. Uses cone geometry based on tree height and base width to give you a precise shopping list so you never buy too much or too little. New
Hamster Power Calculator - Calculate how many hamsters running on exercise wheels would be needed to power your house, charge a Tesla, run a gaming PC, or operate any appliance. Based on real hamster exercise data. New
Helium Balloon Lift Calculator - Calculate how many standard helium balloons are needed to lift a person, object, or even a house (Up style!) using Archimedes' buoyancy principle. Includes fun presets, balloon type options, and altitude effects. New
Kinetic Energy Chicken Cooker - Based on the viral internet meme: calculate how many slaps it takes to cook a raw chicken, or how fast a single slap must be. Uses real thermodynamics (Q = mcΔT) and kinetic energy (KE = ½mv²) to answer the ultimate physics question. New
Poop Salary Calculator - Calculate how much money you earn while using the bathroom at work. Enter your annual salary and daily bathroom minutes to find out your yearly poop pay, lifetime earnings, and fun equivalents. New
Popcorn Fill Room Calculator - Calculate how many popcorn kernels you need to completely fill a room. Enter room dimensions, choose kernel type, and see the total volume, weight, and cost of popcorn required with interactive 3D visualization. New
Teleportation Error Rate Calculator - Calculate the probability of quantum reconstruction errors during teleportation based on your body mass, distance, and teleporter model. Find out if you'll arrive with extra body parts, reversed organs, or worse. New
Vampire Apocalypse Calculator - Simulate a vampire outbreak using the Lotka-Volterra predator-prey model. Set initial populations, feeding rates, and conversion rates to see how quickly humanity falls — or fights back. New
Zombie Survival Time Calculator - Estimate how long you'd survive a zombie apocalypse based on your location population density, available food supplies, weapon access, and cardio fitness level. New
General Tools
24 Game Solver & Trainer - Enter 4 numbers to solve the 24 game with +, -, *, /. Generate random practice cards by level and train mental arithmetic with instant answer checks. New
Age Calculator - Calculate your exact age in years, months, weeks, days, hours, minutes, and seconds with interactive visualization, birthday countdown, life milestones tracker, and personalized insights.
Air Conditioner BTU Calculator - Calculate the exact BTU cooling capacity needed for your room based on dimensions, ceiling height, sun exposure, occupancy, and other factors. Get AC unit size recommendations.
Aquarium Substrate Calculator - Calculate exactly how much substrate (gravel, sand, aqua soil) is needed for your aquarium based on tank dimensions and desired depth. Features live 3D tank preview, multiple substrate types, and instant weight calculations in pounds and kilograms. New
Aquarium Volume & Stocking Calculator - Calculate accurate aquarium water volume for rectangular, cylindrical, bow front, hexagonal, and corner tanks. Get fish stocking recommendations using inch-per-gallon and surface area methods with animated 3D tank visualization. New
Banana Radiation Calculator - Convert any radiation exposure into Banana Equivalent Dose (BED). Find out how many bananas equal a dental X-ray, CT scan, or airline flight — free online calculator with comparison chart. New
Barcode Generator - Generate professional barcodes in multiple formats (CODE128, CODE39, EAN-13, UPC, ITF-14, MSI, Pharmacode) with customizable appearance. Download as SVG or PNG for free. New
BBQ Calculator - Calculate exactly how much meat, buns, side dishes, condiments, drinks, and charcoal or propane you need for a BBQ based on guest count, appetite level, grill type, and event style. Get a complete shopping list with per-person breakdowns. New
Beer Chill Time Calculator - Calculate exactly how long your beer needs to chill in the fridge, freezer, or ice bath to reach the perfect drinking temperature. Uses Newton's Law of Cooling with support for cans, bottles, growlers, and different beer styles. New
Cocktail ABV Calculator - Calculate the final ABV (alcohol by volume) of any cocktail or mixed drink. Add ingredients with their volume and ABV, factor in ice melt dilution, and get an accurate alcohol percentage with visual breakdown and step-by-step calculation. New
Coffee Brew Ratio Calculator - Calculate the optimal coffee-to-water ratio for your preferred brewing method including Pour Over, Espresso, French Press, Cold Brew, AeroPress, Moka Pot, and Drip Coffee. Adjust strength from light to extra strong. New
Commute Life Wasted Calculator - Calculate the total days, months, and years of your life spent commuting to work. Enter your daily round-trip travel time and years worked to reveal the staggering total and explore what else you could do with that time. New
Cost of Smoking Calculator - Calculate the true financial cost of smoking over time. See daily, monthly, yearly, and lifetime costs with investment opportunity analysis and health recovery timeline.
Daily Time Savings Calculator - Calculate how much time you can save per year by saving just a few minutes each day. Discover the cumulative impact of small daily time savings with detailed breakdowns and visual comparisons. New
Email Reply Time Calculator - Calculate the optimal email reply time based on sender status, urgency, and your relationship. Avoid looking too eager or too aloof with our playful timing algorithm that factors in workplace dynamics and social psychology. New
Falling Through Earth Calculator - Calculate exactly how long it takes to fall through a hypothetical tunnel drilled through the center of the Earth. Explore the classic ~42-minute gravity train problem with both uniform density and realistic PREM variable density models. See maximum speed at the core, experience weightlessness timing, and compare with real-world travel speeds. New
Homebrew ABV Calculator (Alcohol by Volume) - Calculate the alcohol by volume (ABV) in your homebrewed beer, wine, cider, or mead using original and final gravity readings. Features multiple formulas, Brix support, visual fermentation animation, attenuation calculation, and calorie estimation. New
How Old Are You? - Find out exactly how old you are in years, months, weeks, days, hours, minutes, and seconds. Get life milestones, birthday countdown, zodiac sign, and detailed age breakdown.
IP Address to Binary Converter - Convert IP addresses to binary with interactive visual breakdown, step-by-step explanation, and multiple output formats. Supports both IPv4 and IPv6 addresses.
IP Address to Hex Converter - Convert IP addresses (IPv4/IPv6) to hexadecimal with interactive visual breakdown, multiple output formats, step-by-step conversion explanation, and network analysis. Featured
Is JavaScript Enabled? - Instantly check if JavaScript is enabled in your browser and explore a full diagnostic of your browser's JavaScript capabilities, APIs, and features.
Job Finder - Find your dream job by searching millions of listings from thousands of job boards, company pages, and recruitment sites in one place.
Kakuro Generator - Generate Cross Sums (Kakuro) puzzles with adjustable size, difficulty, symmetry, and optional solution reveal for printing or practice. New
KenKen Generator (Calcudoku) - Generate KenKen puzzles with valid cage targets, operation mix controls, and optional solution reveal for classroom practice or daily brain training. New
Lego Brick House Calculator - Estimate how many standard 2×4 Lego bricks are needed to build a life-size house. Enter your house dimensions, wall thickness, and window/door count to get a detailed brick count, total weight, estimated cost, and fascinating comparisons with real-world Lego structures. New
Maze Generator - Generate random, solvable mazes with custom dimensions, start/end points, and colors. Download as PNG, SVG, or animated GIF solution. New
Meeting Cost Ticker - See the real-time cost of your meeting ticking up like a taximeter. Enter the number of attendees and average hourly rate, then start the timer to watch the cumulative cost grow second by second. New
Miles per Gallon Calculator - Calculate MPG (miles per gallon), convert to L/100km, estimate fuel costs, compare vehicle efficiency, and track CO2 emissions with our comprehensive fuel economy calculator.
Nonogram Generator (Picross) - Upload an image and instantly create a Nonogram puzzle with row and column clues, answer key, and printable puzzle board. New
Number to Word Converter - Convert any number to English words instantly. Supports cardinal, ordinal, and currency formats. Featured
Parking Ratio Calculator - Calculate the required number of parking spots based on building square footage and usage type. Supports retail, office, residential, restaurant, medical, hotel, industrial, and more with ITE standard parking ratios. New
Penny Drop Impact Calculator - Calculate the terminal velocity and impact force of a penny dropped from any height. Debunk the famous Empire State Building penny myth with real physics — drag coefficients, air density, and energy comparisons. New
Pizza Party Planner - Calculate the perfect number of pizzas for your party based on guest count, appetite level, pizza size, and event type. Get detailed breakdowns with cost estimates, vegetarian splits, and per-person serving analysis. New
Plant Spacing Calculator - Calculate the optimal number of plants for any garden area using square grid or triangular spacing layouts. Visualize planting patterns, compare efficiency, and maximize your garden yield with interactive layout diagrams. New
QR Code Generator - Create custom QR codes for URLs, text, WiFi, email, and phone numbers. Customize colors, size, error correction, and download as PNG instantly.
Quote Finder - Find thousands of quotes by author or phrase. Dive into a comprehensive quote database today!
Sudoku Generator & Solver - Generate unique 9x9 Sudoku puzzles from Easy to Evil, solve your own puzzles instantly, and print clean puzzle sheets to PDF for offline play. New
Wedding Alcohol Calculator - Estimate how many bottles of wine, beer, and spirits you need for a wedding or party. Customize guest count, event duration, drinking levels, and beverage mix to get accurate drink estimates with a visual shopping list. New
Word to Phone Number Converter - Convert words and phrases to phone numbers using the international standard T9 keypad letter mapping. Perfect for creating memorable phone numbers and understanding alphanumeric encoding. Featured
Image Tools
Add Line to Image - Draw lines directly onto your images with customizable colors, styles, and thickness. Features include solid, dashed, dotted, and brush strokes, zoom controls, undo support, and instant PNG download. 100% private - images never leave your device. New
Add Text to Image - Add custom text overlays to images with multiple layers, fonts, colors, and effects like shadow, outline, glow, and 3D. Free online tool with drag-and-drop positioning. New
Collage Maker - Create stunning photo collages online for free with 6 professional layouts, customizable gaps, background colors, drag-and-drop reordering, and high-resolution downloads. 100% private - all processing in your browser.
Flip GIF - Flip animated GIFs horizontally (mirror) or vertically online for free. 100% privacy - files are processed in your browser, never uploaded to any server. New
Flip Image - Flip images horizontally (mirror) or vertically online for free. 100% private - all processing happens in your browser. No upload required. New
GIF Maker - Create stunning animated GIFs from your images with drag-and-drop simplicity. Adjust speed, quality, and dimensions. 100% browser-based for complete privacy.
Image Censor - Protect privacy in your photos by censoring sensitive areas with pixelation, blur, or solid color. 100% client-side processing - your images never leave your device. New
Image Compressor - Compress and resize images instantly in your browser. Supports JPEG, PNG, and WebP output with batch processing, visual comparison, and ZIP download. 100% private — files never leave your device. New
Image Cropper - Crop images online for free with preset aspect ratios (1:1 Square, 16:9, 4:5 Portrait). No upload required - all processing done locally in your browser for complete privacy.
Image Enhancer - Enhance your images instantly with our free online tool. Adjust brightness, contrast, saturation, sharpness, and temperature. Apply professional preset filters like Vivid, B&W, Vintage, and Cinematic. 100% browser-based - your images stay private. New
Image Flipper - Flip images horizontally or vertically with live preview, batch processing, output format selection (PNG/JPEG/WebP), and quality control. 100% browser-based, private, and free.
Image Resizer - Resize images online for free. Supports JPG, PNG, GIF, WebP. Batch processing, social media presets, aspect ratio lock. 100% private - images never leave your browser.
Image Rotator - Rotate one or multiple images by any angle (0-360 degrees) with live preview, quick presets, and batch download. Free, fast, and works entirely in your browser. New
Image Splitter - Split images into multiple parts with customizable grid layouts. Features draggable guide lines, quick presets for Instagram carousels and grids, zoom controls, and batch ZIP download. 100% private - all processing happens in your browser.
Print Size & Resolution Calculator (DPI/PPI) - Calculate the maximum high-quality print size for your digital images. Enter your image dimensions in pixels and desired DPI to see exactly how large you can print while maintaining sharp quality. Features visual comparison, standard print sizes, and quality recommendations. New
Key Generators
Django Secret Key Generator - Generate cryptographically secure SECRET_KEY values for Django projects with entropy analysis, character composition visualization, and one-click copy. Essential for Django security.
GUID / UUID Generator - Generate random 128-bit GUID/UUID identifiers (v1, v4, v5) compliant with RFC 4122. Features visual structure breakdown, multiple formats, batch generation, and UUID validation.
MAC Address Generator - Generate random MAC addresses in multiple formats with prefix support, OUI lookup, unicast/multicast and local/universal options. Perfect for network testing, software development, and educational purposes. Featured
WordPress Secret Key Generator - Generate cryptographically secure WordPress security keys and salts for your wp-config.php file. One-click copy, key strength analysis, and step-by-step installation guide.
WPA Key Generator - Generate cryptographically secure WPA/WPA2/WPA3 keys for your wireless network. Create random, uncrackable WiFi passwords with customizable length, character sets, and security strength analysis.
Length Converters
Cm to Feet and Inches Converter - Convert centimeters to feet and inches instantly with step-by-step calculations, visual height comparison, and quick presets for common heights. Featured
CM to Inches Converter - Instantly convert centimeters (cm) to inches with our free online converter. Includes conversion formula, visual ruler guide, and common conversions. Featured
Feet and Inches to Cm Converter - Convert feet and inches to centimeters instantly with visual height comparison, multi-unit output (cm, meters, total inches), and common height reference examples. Featured
Feet to Meters Converter - Instantly convert feet to meters with visual comparison scale, feet and inches input support, metric breakdown (centimeters/millimeters), and common length reference examples.
Inches to cm Converter - Convert inches to centimeters instantly with interactive visual scale, fractional inch support, multiple output units (cm, mm, m), and real-world size comparisons.
Meters to Feet Converter - Instantly convert meters to feet with visual comparison scale, feet and inches breakdown, fractional inch display, and common length reference examples.
Lookup Tools
Facebook User ID Lookup - Free online tool to find any Facebook user, page, or group numeric ID from a profile URL or username. Essential for developers, marketers, and social media managers. Featured
MAC Address Lookup - Instantly identify network device manufacturers and vendors by MAC address. Search by full or partial MAC address, or look up MAC prefixes by company name with our comprehensive OUI database. Featured
What is my IP Address? - Instantly discover your public IP address with detailed network information, IPv4/IPv6 detection, one-click copy, and connection details in a beautiful dashboard interface.
Number System Converters
BCD to Binary Converter - Convert BCD (Binary-Coded Decimal) to binary with step-by-step visualization and detailed explanations. Featured
BCD to Decimal Converter - Convert BCD (Binary-coded decimal) to decimal integer with step-by-step visualization and detailed explanations. Featured
BCD to Hex Converter - Convert BCD (Binary-Coded Decimal) to hexadecimal with step-by-step visualization, digit breakdown, and interactive conversion diagrams. Supports packed BCD, unpacked BCD, and multiple input formats. Featured
Binary to BCD Converter - Convert binary numbers to BCD (Binary-Coded Decimal) format with interactive step-by-step visualization, bit mapping diagrams, and detailed conversion explanations. Featured
Binary to Gray Code Converter - Convert a binary number to Gray code with a step-by-step explanation, XOR truth table, and bit-by-bit visualization. Featured
Decimal to BCD Converter - Convert decimal integers to BCD (Binary-Coded Decimal) with step-by-step visual conversion, comparison tables, and detailed explanations. Featured
Gray Code to Binary Converter - Convert gray code to binary number with step-by-step conversion process. See the detailed transformation from Gray code to standard binary representation. Featured
Hex to BCD Converter - Convert hexadecimal (Base-16) numbers to BCD (Binary-Coded Decimal) format with interactive step-by-step visualization, digit mapping diagrams, and comprehensive conversion breakdown. Featured
Occult Calculators
Advanced Zodiac Compatibility Analyzer - Analyze relationship compatibility by comparing Sun (identity), Moon (emotions), Venus (love style), and Mars (drive) signs. Get detailed pair-by-pair analysis, element harmony insights, and an overall compatibility score. New
Angel Number Calculator - Discover your angel numbers through recurring numbers or birth date calculation with detailed meanings and spiritual guidance. Featured
Astrological Element Balance Calculator - Analyze the balance of the four elements (Fire, Earth, Air, Water) in your birth chart based on planetary placements to understand your fundamental temperament and energetic blueprint. New
Astrological Modality Balance Calculator - Analyze the balance of the three modalities (Cardinal, Fixed, Mutable) in your birth chart to understand how you initiate, stabilize, and adapt to life's changes. New
Birthstone and Zodiac Flower Finder - Find the traditional birthstones and zodiac flowers associated with your birth month. Discover the unique symbolism, healing properties, and meanings behind these precious gems and blooms. New
Celtic Tree Zodiac Calculator - Discover your Celtic Tree Sign based on the ancient druidic lunar calendar. Find your sacred tree among 13 Celtic trees like Birch, Oak, Willow, and explore its unique symbolism, personality traits, and spiritual meaning. New
Destiny Number Calculator - Calculate your numerology destiny number (life path number) from your birth date with step-by-step reduction, detailed personality insights, and compatibility analysis.
Expression Number Calculator - Calculate your numerology expression number (also called the name number) based on your full name. See your letter-by-letter breakdown, reduction steps, and meaning.
Life Path Number Calculator - Calculate your life path number based on your birth date. Discover your destiny, life purpose, and personality traits with detailed numerology interpretation and step-by-step calculation.
Love Compatibility Calculator - Calculate detailed love compatibility using numerology, zodiac signs, and elemental analysis. Get personalized insights with interactive compatibility gauges, relationship dynamics, and cosmic connection scores. Featured
Mars Sign Calculator - Calculate your Mars sign instantly with our accurate Mars Sign Calculator. Discover how Mars shapes your drive, passion, energy, assertiveness, and approach to conflict and desire.
Master Number Calculator - Calculate your Life Path Number from your birth date and discover Master Numbers (11, 22, 33) with detailed spiritual meanings, calculation breakdown, and numerology insights. Featured
Mercury Retrograde Calendar - Check if Mercury is retrograde now. View complete Mercury retrograde dates, shadow periods, and zodiac signs for any year (1900-2100) with Swiss Ephemeris accuracy. New
Mercury Sign Calculator - Find your Mercury sign to reveal your communication style, thought processes, and learning approach. Enter your birth date, time, and location for an instant reading. New
Moon Sign Calculator - Discover your Moon Sign based on your exact birth time and location. Understand your emotional nature, inner self, and subconscious patterns through accurate astrological calculation.
Moon Sign Compatibility Calculator - Discover the emotional compatibility between two people based on Moon signs. Calculate Moon positions using precise astronomical data and receive detailed analysis of emotional dynamics, nurturing styles, and relationship harmony. New
Name Number Calculator - Calculate your numerology name number based on your full name. Discover the meaning of your name number with detailed step-by-step calculation and interpretation. Featured
New Moon & Full Moon Calendar - Find precise dates and times of all New Moons and Full Moons for any year from 1900 to 2100. Includes zodiac positions, spiritual meanings, and intention guidance for each lunar phase. New
Numerology Calculator - Calculate your complete numerology profile including Life Path, Expression (Destiny), Soul Urge, Personality, and Birthday numbers with detailed interpretations and step-by-step calculations.
Personality Number Calculator - Calculate your numerology personality number based on the consonants in your name. Discover how others perceive you with detailed step-by-step calculation and interpretation.
Saturn Return Calculator - Calculate the exact timing of your Saturn Return with precision ephemeris data. Discover your natal Saturn sign, all three return dates, and personalized life themes for this transformative astrological milestone. New
Soul Urge Number Calculator - Calculate your numerology Soul Urge (Heart's Desire) Number from the vowels in your full name, with step-by-step breakdown and meaning.
Sun, Moon & Rising Sign Calculator 🌞🌙✨ - Calculate your Sun, Moon, and Rising signs (the astrological Big Three) based on your birth date, time, and location. Get detailed personality interpretations, elemental analysis, and discover how these three placements shape your identity, emotions, and outward personality. Featured
Venus Sign Calculator - Calculate your Venus sign to understand your love language, romantic preferences, aesthetic values, and relationship style. Enter your birth date, time, and location for an accurate personalized reading.
What is my Chinese Zodiac Sign? - Find out what your Chinese zodiac sign is based on your birth date. Discover your zodiac animal, personality traits, lucky numbers, compatible signs, and the meaning behind your Chinese astrological sign.
What is my Lucky Number? - Find out what your lucky number is based on your date of birth using numerology. Discover the meaning of your lucky number with detailed interpretation and personality insights.
What is my Zodiac Sign? - Discover your zodiac sign instantly! Enter your birth date to reveal your astrological sign, personality traits, element, ruling planet, and compatibility with other signs.
Pet Age Calculators
Cat Years to Human Years Calculator - Convert your cat's age to human years with accurate life stage analysis, health insights, and visual comparison charts.
Dog Years to Human Years Calculator - Convert dog years to human years using modern veterinary guidelines. See your dog's equivalent human age, life stage, and health insights based on breed size.
Photography Tools
Depth of Field (DoF) Calculator - Calculate depth of field (DoF), hyperfocal distance, near/far focus limits, and circle of confusion for any camera and lens combination. Features interactive visualization, real-time aperture comparison, and comprehensive photography calculations. New
Golden Hour / Blue Hour Calculator - Calculate exact golden hour and blue hour times for any location and date. Get optimal photography lighting windows with stunning visual timeline, sun position animations, and detailed shooting recommendations for photographers. New
Pressure Converters
Bar to PSI Converter - Convert pressure between bar and psi (pounds per square inch) with visual gauge, common presets, and multi-unit results.
kPa to psi Converter - Convert kPa (kilopascals) to psi (pounds per square inch) instantly. Free online pressure unit converter with conversion formula, reference chart, and common pressure examples.
PSI to Bar Converter - Convert between PSI (pounds per square inch) and Bar pressure units instantly. Features bidirectional conversion, visual pressure gauge, common presets for tires, SCUBA, and industrial applications, plus multi-unit comparison table.
psi to kPa Converter - Convert psi (pounds per square inch) to kPa (kilopascals) instantly. Free online pressure unit converter with conversion formula, reference chart, and common pressure examples.
Student Calculators
Electricity Calculator - Calculate voltage, current, resistance, and power using Ohm's Law and Watt's Law. Enter any two known values and instantly solve for the other two with detailed step-by-step formulas.
GPA Calculator - Calculate your GPA (Grade Point Average) with course credits and grades. Supports US 4.0 scale, plus/minus grades, weighted GPA, and multiple grading systems.
Kinematics Calculator - Solve one-dimensional kinematics problems using the four kinematic equations. Enter any 3 known variables to find the 2 unknowns with detailed step-by-step solutions.
Unit Converters
Angle Converter - Convert angles between degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians instantly with a visual protractor diagram and DMS notation support. New
Energy Converter - Instantly convert between 12+ energy units including Joules, Calories, BTU, kWh, eV, and more. Features real-time conversion, practical examples, and scientific notation support. New
File Size Converter - Convert file sizes between all units (Bits, Bytes, KB, MB, GB, TB, PB) with binary (1024) and decimal (1000) standards. Includes visual size comparisons and instant all-unit conversion.
kg to lbs Converter - Convert kilograms (kg) to pounds (lbs) and vice versa with step-by-step calculations, weight breakdowns in ounces, and real-world weight comparisons. Featured
Lbs to Kg Converter - Convert pounds (lbs) to kilograms (kg) with our easy-to-use weight conversion calculator. Get accurate conversions with visual representations and detailed explanations. Featured
Length Converter - Convert between length units instantly: meters, centimeters, millimeters, kilometers, feet, inches, yards, miles, and nautical miles. Features real-world comparisons and visual scale. New
Percent to PPM Converter - Free online tool to convert between percent (%) and parts per million (ppm) with instant results, visual scale diagram, and common conversion reference table. Featured
Power Converter - Instantly convert power between Watts, Kilowatts, Megawatts, Horsepower (mechanical & metric), BTU/h, Ton of Refrigeration, and Foot-Pound per Second with visual scale comparison. New
PPM to Percent Converter - Convert ppm (parts-per-million) to percentage with visual scale, real-world examples, and detailed explanations. Featured
Pressure Converter - Instantly convert pressure between Pascals (Pa), Kilopascals (kPa), Megapascals (MPa), Bar, Millibar (mbar), PSI, Atmospheres (atm), Torr, and kgf/cm² with visual gauge and quick presets. New
Scale Model Conversion Calculator - Convert measurements between different scale model ratios (1:72, 1:35, 1:24, etc.) and real-world dimensions. Perfect for hobbyists building aircraft, vehicles, ships, architectural models, and miniatures. Features visual scale comparison, common scale presets, and bidirectional conversion. New
Shoe Size Converter - Instantly convert shoe sizes between US, UK, EU, Japan (Mondopoint), Mexico, Brazil, and Korea. Supports men's, women's, and children's sizes with foot measurement guide. New
Speed Converter - Instantly convert speed between Meters per Second, Kilometers per Hour, Miles per Hour, Feet per Second, Knots, Mach Number, and Speed of Light with interactive speedometer visualization and real-time comparisons. New
Temperature Converter - Convert temperature between Celsius (°C), Fahrenheit (°F), Kelvin (K), Rankine (°R), and Réaumur (°Ré) with visual thermometer display, reference points, and detailed conversion formulas.
Ultimate Frequency & Wavelength Converter - Convert between frequency and wavelength across the electromagnetic spectrum with interactive visualization, step-by-step calculations, and support for custom propagation speeds.
Volume Converter - Convert volume instantly between Liters, Milliliters, Cubic Meters, US Gallons, Quarts, Pints, Cups, Fluid Ounces, Tablespoons, Teaspoons, Cubic Feet, and Cubic Inches with visual comparison. New
Weight (Mass) Converter - Instantly convert weight between Kilograms, Grams, Milligrams, Pounds, Ounces, Stones, Metric Tons, Short Tons, Long Tons, Carats, and Micrograms with real-time updates and visual object comparisons. New
Video Tools
Add or Replace Audio in Video - Easily add new audio to your video (mixing with original sound) or completely replace the video's existing audio. Keeps original video length. Option to loop shorter audio. Adjust added audio volume in dB. New
Add Watermark to Video - Easily add a text or image watermark to your videos online. Customize position, size, font, and color. No uploads required. New
Adjust Video Speed - Easily change video playback speed (slow motion or fast forward) online. Supports 0.25x to 4.0x speed adjustment. Free, client-side processing. New
Flip Video - Easily flip your videos horizontally (mirror) or vertically online without uploading. Free, fast, and secure. New
FPS Converter - Easily change the frame rate (FPS) of your videos online. Supports presets and custom FPS. Free, fast, and client-side processing. New
GIF to MP4 Converter - Convert your animated GIFs into MP4 videos directly in your browser. Customize quality, size (dimensions/scale), preview, and download instantly. Fast, free, and private. New
Loop Video - Easily loop your videos a specified number of times. Processes in your browser, no uploads. Free and secure. New
Merge Videos - Combine multiple video files into a single video online. Client-side merging, reorder videos before merging. Free and secure. New
MP4 to GIF Converter - Convert your MP4 videos into animated GIFs directly in your browser. Customize size, FPS, and preview instantly.
Random Video Thumbnail Generator - Generate random thumbnails from uploaded videos.
Remove Audio from Video - Easily remove the audio track (mute) from your video files online. Keeps video quality. Client-side processing. New
Reverse Video - Easily reverse short video clips online (best under 20s). Optionally select start/end times. Processed in your browser. New
Rotate Video - Easily rotate your videos 90, 180, or 270 degrees clockwise or counter-clockwise online without uploading. Free, fast, and secure. New
Video Compressor - Compress video files online directly in your browser. Reduce video size with adjustable quality settings. Free, secure, and no uploads required. New
Video Cropper - Crop your videos online directly in your browser. Draw a rectangle to select the area, preview, and download. New
Video Splitter - Easily split a segment from your video online without uploading. Select start and end times visually. Free, fast, and secure. New
Video to Image Extractor - Extract single or multiple image frames from your videos online. Select time, interval, and format (PNG, JPG, WEBP). New
Volume Converters
Cups to Gallons Converter - Convert between US cups and gallons with a visual conversion chart, instant bidirectional calculator, step-by-step formula, and a full reference table for common cooking and baking measurements.
Cups to Liters Converter - Convert US cups to liters instantly with visual measuring cup reference, common cooking conversions, and bidirectional conversion. Perfect for recipes and cooking measurements.
Cups to Ounces Converter - Convert cups to ounces with support for US, Imperial, and Metric cup standards. Includes visual diagrams, quick reference tables, and ingredient weight conversions for cooking.
Cups to Quarts Converter - Convert between US cups and US quarts with a visual quart-fill diagram, bidirectional converter, step-by-step formula, multi-unit conversion panel, and a comprehensive cooking reference table.
Cups to Tablespoons Converter - Convert cups to tablespoons and tablespoons to cups instantly. Features bidirectional conversion, visual measuring guide, common recipe measurements, ingredient-specific conversions, and fractional results for easy cooking and baking.
Cups to Teaspoons Converter - Convert cups to teaspoons and teaspoons to cups instantly. Features bidirectional conversion, visual measuring guide, common recipe conversions, and fractional results for easy cooking.
Gallons to Cups Converter - Convert US gallons to cups instantly with visual representations, bidirectional conversion, and complete volume breakdown including quarts and pints.
Liters to Cups Converter - Convert liters to cups instantly. Supports US customary cups, metric cups (250 mL), and Imperial cups with precise calculations and a visual converter.
Ounces to Cups Converter - Convert fluid ounces to cups and cups to ounces instantly. Features bidirectional conversion, visual measurement guide, common conversions reference table, and detailed step-by-step calculations for cooking and baking.
Quarts to Cups Converter - Convert quarts to cups instantly with visual measuring guides, bidirectional conversion, multiple measurement systems (US, UK, Metric), common cooking conversions, and step-by-step calculations.
Tablespoons to Cups Converter - Convert tablespoons to cups and cups to tablespoons instantly. Supports US, Metric, and Imperial measurements with visual fill-level diagrams.
Tablespoons to Teaspoons Converter - Convert tablespoons to teaspoons and teaspoons to tablespoons with visual spoon diagrams, step-by-step calculations, and a quick reference table for common recipe measurements.
Teaspoons to Cups Converter - Convert teaspoons to cups and cups to teaspoons instantly. Features bi-directional conversion, visual measuring guides, common recipe presets, and a complete reference table for cooking and baking.
Teaspoons to Tablespoons Converter - Convert teaspoons to tablespoons and vice versa with visual spoon representations, batch conversion for recipes, and a comprehensive quick reference chart. Supports US, metric, and UK measurement systems.
Weight Converters
Grams to Ounces Converter - Convert grams to ounces (oz) instantly with an interactive balance scale visualization, step-by-step calculations, common weight references, and a comprehensive conversion table.
Grams to Pounds Converter - Convert grams to pounds instantly with visual weight scale, real-world comparisons, bidirectional conversion, and interactive conversion tables for cooking, shipping, and everyday weight measurements.
Ounce to Gram Converter - Convert ounces to grams instantly with visual weight scale, common conversions table, precision control, and step-by-step calculation breakdown.
Pounds to Grams Converter - Convert pounds to grams instantly with an interactive visual scale, common weight references, and detailed conversion tables. Features bidirectional conversion with real-world examples like food portions and everyday objects.
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