Construction And DIY Calculators

Enter driveway or road dimensions, thickness, and mix density to calculate asphalt tonnage, cubic yards, required truckloads, and total material cost.

Calculate even baluster spacing for a deck, stair or porch railing so every gap stays under the 4-inch code limit. Get the baluster count, even gap, on-centre spacing and a tape-measure layout list in imperial or metric units.

Work out how much baseboard, crown molding or trim a room needs. Subtract doorways, add a waste factor for miter cuts, and see the linear feet, the number of boards to buy, leftover offcut and total cost with a room blueprint.

Estimate the maximum safe load, bending moment, shear, stress, and deflection of beams. Choose support type, load pattern, cross-section, and material to get a strength and serviceability verdict.

Calculate lumber volume in board feet with 25+ wood species, cost estimation, weight calculations, and 3D visualization. Perfect for woodworkers, contractors, and DIY enthusiasts.

Calculate the recommended tightening torque, clamp-load preload, and yield-margin for a bolt — pick a metric M or imperial UN size, ISO/SAE grade, and lubrication, and compare both the short-form K-factor and the VDI 2230 detailed method.

Enter wall size, brick size, bond pattern, and door or window openings. Get brick count, mortar, and cost.

Work out carpet square footage, estimate material and installation costs, plan the roll layout with seam placement and allow for waste. Supports rectangular, L-shaped and multi-room layouts with padding and a cost breakdown.

Enter room length, width, and ceiling height. Get blade span, downrod length, mount type, and hanging height.

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.

Find out whether your couch fits through a doorway before moving day. Checks the sofa upright and on its side, shows the clearance to spare, tells you if removing the legs rescues a tight fit, and compares the diagonals.

Enter length, width and depth in feet, inches, yards or metres to get yards, tons, truck loads, bags and a waste buffer for concrete, gravel, mulch or soil.

Enter window measurements, fullness and where the hem should fall to get panel width, length, a ready-made size and sewing cut dimensions.

Enter board, railing and stair sizes, stain type, wood surface and coats to get gallons, whole cans to buy, leftover and estimated cost.

Enter length, width, board size, gaps and spacing in imperial or metric units to list boards, joists, beams, posts and fasteners, with a waste allowance.

Find the right dehumidifier pint capacity for a room, basement or whole house. Describe the dampness in plain language and get a capacity on both the 2019 DOE scale and the old scale, with target humidity and daily water removal.

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.

Work out how much epoxy resin river tables, deep pours, flood coats and round moulds need. Get mixed volume in gallons and litres, the resin-to-hardener split for any ratio, mixed weight, coverage area and an optional cost estimate.

Calculate fence materials including posts, rails, pickets, panels, concrete, and hardware with visual diagrams. Supports privacy, picket, post & rail, and panel fence styles.

Enter a stack's length, height, and depth to get full cords, face cords, and volume. Add the price for cost per cord and weight.

Enter room dimensions, unit coverage, waste allowance, and unit price to calculate required box or roll counts, total area, and material costs.

Work out how much grass seed your lawn needs by area, grass type and whether you are starting fresh or overseeding. Get pounds of seed, bags, seeding rate, leftover and an optional cost, with a new-lawn versus overseeding comparison.

Plan a landscape job fast: pick rectangle, circle, triangle or ring beds, set the depth, choose gravel, sand, topsoil, mulch, compost or fill dirt, and get volume, weight, bags, truck loads and cost with compaction and waste factored in.

Enter room size, insulation, climate zone, sun, windows, occupancy, and appliances. See the BTU and tonnage to heat or cool the space.

Calculate recommended R-values, insulation thickness, material quantity, and estimated costs based on your climate zone, building component, and insulation type.

Calculate board feet from lumber dimensions, estimate how many boards a project needs, and get the total cost with a waste factor. Supports standard and custom sizes, several wood species and templates for decks, fences and framing.

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.

Enter area and depth for mulch, topsoil, gravel, or sand. Get volume in cubic yards or meters, weight, how many bags, and how many truck loads.

Work out how much paint a room needs with smart coverage estimation. Covers walls, ceiling and trim with automatic door and window deductions, several coats, texture adjustments and a shopping list across different can sizes.

Calculate exactly how many pavers, how much bedding sand, joint sand, and gravel base material you need for your patio, walkway, or driveway. Supports multiple paver sizes and laying patterns with a printable shopping list.

The calculated height is where the wire or D-ring rests on the hanger. Locate nail or screw holes using the actual hanger offset or mounting template.

Enter diameter, length, and flow or pressure to get flow rate, velocity, Reynolds number, head loss, and pressure drop.

Use average depth for water volume and a separate maximum depth for liner sizing. Add twice the maximum depth and twice the edge overlap to each plan dimension. Maximum depth must be at least the average depth. Liner estimate using maximum depth. Check the actual laid-out path over shelves and contours before buying.

Work out how much salt to add to a saltwater pool to hit a target salinity for your chlorine generator. Enter pool volume, current level and target ppm for the weight and number of bags - or how much water to drain if over-salted.

Calculate the number of rebar bars, total linear footage, weight and estimated cost for a concrete slab. Supports sizes #3 through #10 with presets for driveways, patios and foundations, plus a visual grid layout diagram.

Calculate the number of blocks, gravel, drainage aggregate, geogrid, and total materials needed for your retaining wall project. Get a detailed material list with cost estimates.

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.

Calculate roofing materials for your project - shingles, metal sheets, tiles or underlayment. Includes a roof pitch calculator, waste factor adjustment, visual roof diagrams and material quantity estimates with worked steps.

Find the right rug size for a living room, dining room or bedroom using proven layout rules. Enter your room and furniture, and get an ideal size snapped to a rug you can actually buy, drawn on a to-scale top-down floor plan.

Estimate how much siding you need in squares from your exterior wall area minus windows and doors. Add gable ends, choose a siding type and waste factor, and get boxes or panels, total cost and a house elevation diagram.

Enter rise, run, angle, or slope percentage to calculate grade and missing dimensions, evaluate steepness, and verify ADA wheelchair ramp compliance.

Calculate how much sod your lawn needs in slabs, rolls or pallets. Enter the lawn as a rectangle, circle, triangle or L-shape, add a waste allowance for cuts and edges, and get a to-scale diagram and an optional cost estimate.

Calculate square footage for rectangles, triangles, circles, trapezoids, L-shapes, and custom multi-room layouts. Includes material estimator for paint, flooring, and tile, plus cost calculator and common room size references.

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.

Calculate stair dimensions including the number of steps, rise, run, stringer length and angle, and check compliance with IRC building code standards. Supports US Customary and metric units with automatic or manual step counts.

Estimate the weight of steel bars, plates, pipes, tubes and angles from their dimensions and density. Pick a shape, enter the sizes and choose a material to get per-piece and total weight, volume, surface area and cost.

Enter wall length, 16 or 24 inch spacing, and any doors or windows to count studs, plates, and lumber, with an optional cost. Up to 500 ft.

Calculate exactly how many tiles you need for floors or walls. Get complete material estimates including grout, adhesive, and cost calculations.

Work out how much grout a tiling job needs. Enter tile size, joint width and depth and the total area to get grout volume, weight in kilograms and pounds, bags to buy and coverage per square metre, for sanded, unsanded or epoxy grout.

Enter screen size and seated eye level for floor-to-center, bottom, and top heights, a viewing-angle check, and a suggested downward tilt.

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.

Find the right water heater size for your household. Tank mode sizes it in gallons from peak-hour demand using the DOE first-hour-rating method, while tankless mode gives the GPM flow rate for your temperature rise plus BTU/hr and kW.