Health and Fitness

Enter age, gender, and six event results to estimate historical ACFT points and view an event breakdown. Results are unofficial approximations.

Build a personalised weekly training split from your goal, available equipment, experience level and schedule. Get a day-by-day routine with exact sets, reps, rest, target muscles and progression tips.

Estimate body fat percentage using the official US Army tape-test method with neck, waist, and hip circumference measurements per AR 600-9.

Find the right backpack from your torso length and trip length: the correct frame size (XS to L) and the recommended pack volume in litres, adjusted for nights out, packing style and season. Includes a torso measuring guide.

Turn your beep test (20m multi-stage fitness test) result into an estimated VO2 max with the Leger equation. Enter the level and shuttle plus age and gender to see VO2 max, a fitness rating, speed, shuttles and distance covered.

Enter the weight you lifted, the repetitions, and your body weight to estimate a bench-press 1RM and training percentages.

Enter chainring teeth, cog teeth, cadence, and wheel size to get gear ratio, gear inches, development, and speed.

Enter height and inseam to get a frame size for road, mountain, and hybrid bikes, plus saddle height and standover.

Calculate your basal and resting metabolic rate plus daily calorie needs with the Mifflin-St Jeor and Harris-Benedict equations. Includes TDEE, an activity-level breakdown, macronutrient estimates and a formula walkthrough.

Calculate your body fat percentage using the US Navy Method with visual body composition breakdown, fitness category assessment, and personalized health recommendations.

Plan calorie and macro targets for losing fat and gaining muscle at the same time. Get a Recomp Feasibility Score, training-day versus rest-day calorie cycling, protein-first macros and 12, 24 and 52 week projections.

Estimate punch force, impact energy and power output from body weight, fist speed and effective striking mass. Turns impulse, momentum and kinetic energy into newtons, joules and watts, rated against amateur and pro benchmarks.

Calculate calories burned during 50+ activities with MET values, personalized insights, food equivalents, and interactive visualization. Supports metric and imperial units.

Enter current weight, goal weight, activity, and weeks. Get BMR, TDEE, and a daily deficit capped at 1,000 kcal.

Estimate your VO2 Max from the Cooper 12-minute run test. Get your official Cooper fitness rating by age and gender, see your distance on an animated 400 m track, and predict your 1-mile, 5K and 10K race times.

Calculate your cycling average speed, ride time, or distance. Get pace per km/mile, cycling zone classification, calorie estimates, and comparisons with different riding styles.

Estimate FTP from a 20-minute, 8-minute or ramp test, or enter known FTP. Get seven Coggan power zones in watts and add body weight to see W/kg.

Enter heart rate at peak exercise and one minute later to get the drop, a fitness rating, and a normal or abnormal reading.

Find your helmet size from head circumference for cycling, motorcycle, ski, skateboard, climbing, equestrian, baseball and hockey helmets. Enter centimetres or inches for a letter size (XS-2XL) and a snugness meter.

Enter trail distance, ascent, descent, and rest allowance to calculate estimated hiking time using Naismith's Rule.

Enter trail distance, ascent, descent, and start time to estimate total hiking duration, arrival ETA, average speed, and hike difficulty.

Work out how much water and electrolytes you need before, during and after a workout. Pick activity, duration, body weight, intensity and environment, or measure your real sweat rate, for a minute-by-minute drinking schedule.

Predict your strength potential from lean body mass rather than total bodyweight, because muscle produces force and fat does not. Get predicted 1RMs for squat, bench, deadlift and overhead press, plus FFMI and a muscle efficiency score.

Plan your marathon or half-marathon with target pace, mile/km splits, pacing strategies (negative, positive, even), equivalent race times, and wall prediction.

Calculate your maximum heart rate using 6 scientifically-validated formulas including Tanaka, Gulati, and traditional methods. Get personalized training zones for optimal workout intensity.

Calculate your one-rep maximum (1RM) using 7 scientific formulas. Get training zone percentages, warm-up sets, and visualize your strength potential for any exercise.

Enter your one-mile walk time and ending heart rate. Get an estimated VO2max, a fitness category, fitness age, walking pace, and calories burned.

Enter your activity, pace, weight, and distance or time to calculate total, net, and gross calories burned. Supports paces up to 60:00 per mile or km.

Calculate your personalized training pace zones based on a recent race result using the Jack Daniels VDOT method. Get Easy, Marathon, Threshold, Interval, and Repetition zone paces with targeted workout suggestions.

Enter body weight, a goal, and activity level to get daily protein, a per-meal split, and food-source suggestions.

Predict your 5K, 10K, half marathon and marathon finish times from one recent race result using Riegel's formula. See every predicted time and pace on a race-lane chart, switch between min/km and min/mile, and tune the fatigue factor.

Convert between /500m split, watts, speed and calories for indoor rowing. Enter a split, a power figure, or a distance and time to see every equivalent, plus projected finish times for 2k, 5k, 10k, half and full marathon.

Enter age, sex, distance, and finish time. Get an age-grade percentage against the world standard and equivalent times at other ages.

Enter a pace, a finish time, or a distance. Get the missing value, a pace zone, and projected times for those race distances.

Find the right ski length for your height, weight, skill level and ski type. Gives a recommended length and range in cm and inches, shows where the ski reaches on your body, and explains the nimble-versus-stable choice.

Find your ideal snowboard length and width from weight, height, boot size, riding style and ability. See the recommended length on a gauge, check the chin-to-nose rule on a rider diagram, and measure boot overhang against waist width.

Convert your walking or running steps into miles or kilometres. Estimates stride length from your height and gender, then gives the distance covered, calories burned and time spent - handy for tracking a 10,000 steps a day goal.

Enter body weight and what you lift to estimate a one-rep max and compare your squat, bench, deadlift, or overhead press with bodyweight standards.

Enter your body weight, skill level, and fitness to get your ideal surfboard volume range in litres, buoyancy metrics, and matching board types.

Enter distance and time, and a stroke, to get pace per 100 m, lap splits, and estimated race times for pool or open water.

Enter stroke count and time per length to get a SWOLF score, a 25 m-normalized score, distance per stroke, stroke rate, and pace per 100.

Estimate five heart rate zones using your age and resting heart rate. Use the age-based maximum or enter a known maximum for the Karvonen calculation.

Enter your age, gender, height, weight, and optional body fat percentage to calculate your TDEE, BMR, and recommended daily calorie targets.

Choose a Sprint, Olympic, Half Ironman, or Ironman distance and enter your paces to plan swim, bike, and run times, including transitions.

Calculate your vertical jump height from standing and jump reach measurements. Get performance ratings, estimated power output (Lewis & Harman formulas), sport-specific comparisons, and personalized training tips.

Enter your age, gender, and 12-minute run distance to calculate estimated VO2 max and view training recommendations.

Estimate how long reaching your goal weight will take from your calorie deficit and activity level. Recalculates TDEE adaptively as you lose weight, compares several deficit strategies, and shows a week-by-week projection with milestones.

Enter bodyweight and your total, or individual squat, bench, and deadlift lifts. Compare Wilks, Wilks-2, and DOTS scores side by side.

Set custom pose hold durations, prep times, transitions, and body weight to run a guided routine with audio cues and view estimated calories and breaths.

Enter your diet type, calorie target, meals per day, and food preferences to get a 7-day menu with macro breakdowns and an automated grocery list.

Add each beer, wine, spirit, or cocktail. You get calories, exercise minutes to burn them, standard drinks, and a weekly and annual weight projection.

Select the eye colors of both parents and optional grandparents to calculate probability percentages for brown, green, and blue eyes.

Track your baby's height, weight, and head circumference against WHO growth standards. Get instant percentile rankings with visual growth charts for boys and girls aged 0-24 months.

Estimate how much milk your baby needs each day and per bottle from age and weight. Shows a healthy daily range, the amount per feed and a 24-hour schedule, in millilitres or fluid ounces, with formula-ceiling safety guidance.

Enter drinks consumed, body weight, gender, and elapsed hours to calculate your estimated BAC and see how it compares to the 0.08 US legal driving limit.

Estimate your biological age based on lifestyle, health metrics, and habits. Compare your body's functional age to your chronological age across 4 health dimensions with personalized improvement recommendations.

Calculate your next eligible blood donation date based on donation type. Track whole blood, plasma, platelet, and double red cell donations with personalized countdown and eligibility guidelines.

Interpret your blood pressure reading against AHA/ACC 2017 clinical categories. Get your BP classification, pulse pressure, mean arterial pressure (MAP), and personalized health insights with an animated visual gauge.

Convert blood sugar levels between mg/dL (US) and mmol/L (UK/International) with instant results, diabetes risk assessment, visual range indicators, and comprehensive glucose reference charts.

Enter each caffeinated drink and the time consumed to plot an hourly decay curve, see your bedtime caffeine level, and check your 400 mg daily limit.

Calculate your safe daily caffeine limit based on body weight, then see the equivalent in espresso shots, cups of coffee, energy drinks (Monster, Red Bull), tea, and more. Includes animated drink visualizations and a danger zone meter.

Use the 500 or 450 rule to find how many grams of carbohydrate one unit of insulin covers, compare the two rules, see the units needed for common foods, and estimate a mealtime bolus from your total daily insulin dose.

Enter your age, weight, height, activity level, and diet goals to calculate your daily carbohydrate intake, fiber target, and AHA added sugar limit.

Calculate your child's BMI and CDC BMI-for-age percentile for ages 2 to 20. Enter sex, age, height and weight to see the exact percentile on the CDC growth chart, the weight-status category and the healthy weight range.

Predict your child's adult height from the parents' heights with the mid-parental method. See the prediction and its 95% range on a height ruler, compare the child with each parent, and find the adult-height percentile it lands in.

Compare the alertness boost from coffee versus a power nap. See peak alertness timing, caffeine crash window, and which option gives you better sustained focus based on sleep science and caffeine pharmacokinetics.

Enter your baby's weight and age to find the right diaper fit, track daily or monthly usage, and project when to transition to the next size.

Find out how much weight you should lose based on BMI analysis, get a safe weight loss timeline, calorie deficit plan, and personalized milestones to reach your healthy weight range.

Use the 1500, 1700, 1800 or 2000 rule to find how much one unit of insulin lowers your blood glucose, compare the rules side by side, and estimate a correction dose in mg/dL or mmol/L from your total daily dose.

Choose 16:8, 18:6, 20:4, OMAD, or custom hours. See the fasting and eating windows and a body-process timeline.

Estimate jet lag recovery time from origin and destination time zones, travel direction, and flight time. Get personalized sleep, light exposure, meal timing, and arrival-day adjustment tips.

Calculate your personalized keto macros for fat, protein, and net carbs. Get daily calorie targets, macro ratios, and meal planning insights tailored to your body composition, activity level, and ketosis goals.

Enter age, gender, and habits such as smoking, exercise, diet, sleep, and stress. See an estimated lifespan and how those factors move it.

Enter your age, gender, height, weight, activity level, and fitness goal to calculate your daily target grams for protein, carbohydrates, and fat.

Calculate medication dosage three ways: by body weight in mg/kg, by age with Clark's, Young's and Fried's rules, or by body surface area with the Mosteller formula. Includes mg-to-ml conversion and a max-daily-dose safety check.

Find the perfect nap length and the exact alarm time so you wake refreshed, not groggy. Maps your nap onto real sleep stages with a hypnogram marking the grogginess zone, and works from either your lie-down time or your wake-up time.

Compute net carbs by subtracting dietary fiber and sugar alcohols from total carbohydrates. Supports different sugar alcohol types with accurate glycemic impact factors, daily keto budget tracking, and a visual carb waterfall breakdown.

Calculate the total calories, protein, fat, carbohydrates, and fiber from your recipe's ingredient list. Get per-serving nutrition facts, a macro breakdown chart, and daily value percentages.

Calculate optimal sleep and wake times based on 90-minute sleep cycles. Get personalized recommendations for your age group and track sleep debt.

Enter a drink's volume and ABV to convert it into US, UK, Australian, Canadian, or WHO standard drinks, plus grams of alcohol and calories.

Enter body weight, activity level, and climate for a daily water estimate, a glass count, and an hourly drinking schedule.

Calculate the Absolute Neutrophil Count (ANC) from CBC lab values with visual gauge, NCI toxicity grading, step-by-step calculation breakdown, and clinical interpretation for neutropenia assessment.

Score a newborn on the five APGAR signs - Appearance, Pulse, Grimace, Activity and Respiration. Pick a plain-language option for each and see the total out of 10, the interpretation band and guidance for the 1, 5 and 10 minute checks.

Predict possible blood types of offspring based on the blood types of both parents using ABO and Rh factor genetics. See Punnett square analysis and probability breakdown.

Calculate body surface area (BSA) using 5 medical formulas including Du Bois, Mosteller, Haycock, Gehan-George, and Boyd. Features step-by-step calculations, formula comparison, and drug dosing applications.

Calculate your BUN to creatinine ratio with instant clinical interpretation, visual kidney health indicators, and comprehensive analysis of what your results mean for kidney function.

Calculate creatinine clearance (CrCl) using the Cockcroft-Gault equation. Supports actual, ideal, and adjusted body weight calculations for accurate drug dosing guidance. Includes CKD stage classification and step-by-step formula breakdown.

Calculate the Fractional Excretion of Sodium (FENa) with step-by-step formula breakdown, clinical interpretation, and visual diagnosis guide for acute kidney injury assessment.

Calculate estimated glomerular filtration rate using the CKD-EPI 2021, CKD-EPI 2009, MDRD and Cockcroft-Gault equations. See your CKD stage, compare the results across formulas, and get kidney health context for each.

Calculate the Glasgow Coma Scale score from eye-opening, verbal and motor responses. Get the total (3-15), the E-V-M notation, a colour-coded severity gauge and an interpretation, for adult and paediatric scales plus the NT modifier.

Enter an HbA1c percentage or an average glucose value to convert between percent, mg/dL, and mmol/L.

Estimate your 10-year risk of atherosclerotic cardiovascular disease with the ACC/AHA Pooled Cohort Equations. Calculate your heart age, see how each risk factor contributes, and get suggestions for lowering your cardiovascular risk.

Calculate relative risk from a 2x2 contingency table. Get confidence intervals, absolute risk reduction, number needed to treat, attributable risk and step-by-step solutions with visuals for clinical and epidemiological studies.

Choose DVT or PE, tick the listed risk factors, and get a Wells pretest score with two-tier and three-tier readings.

Enter your height and weight in metric or imperial units to calculate adult BMI. See your BMI category and the weight range for BMI 18.5–24.9.

Find out if you are underweight based on BMI calculation with visual health indicators, personalized insights, and actionable recommendations.

Calculate your BMI (Body Mass Index) with interactive gauge visualization, health category assessment, BMI Prime, healthy weight range, and step-by-step calculation breakdown.

Work out your body frame size - small, medium or large - from wrist circumference, height and gender. Uses the height-to-wrist ratio and direct wrist measurement for dual verification, with frame-adjusted ideal weight ranges.

Enter an age, sex, and height in centimeters or feet and inches to calculate your height percentile against CDC and NHANES growth data.

Calculate your ideal body weight using 5 scientific formulas (Devine, Robinson, Miller, Hamwi, Peterson). Compare results with a visual weight spectrum, BMI analysis, body frame adjustment, and personalized health insights.

Calculate your ideal body weight with four clinically recognised formulas - Devine, Robinson, Miller and Hamwi. Compare the results side by side, see the healthy BMI weight range, and read what your height, gender and age imply.

Enter weight, height and biological sex to compare lean body mass estimates from the Boer, James and Hume formulas. Use metric or imperial measurements.

Calculate your waist-to-hip ratio (WHR) to assess body fat distribution, health risks, and body shape type. Get personalized health insights with visual body shape analysis.

Find out what you should weigh based on your height using BMI guidelines. See your healthy weight range with a visual BMI spectrum, weight zone breakdown, and personalized health insights for adults.

Enter your waist circumference and height to calculate your waist-to-height ratio, health risk category, and body shape indicator.

Determine your correct bra size from band and bust measurements. Get results in US, UK, EU, French, Italian, and Australian sizing systems with sister sizes and fit tips.

Calculate your increased daily caloric needs while breastfeeding. Get personalized recommendations based on your lactation phase, activity level, and body metrics.

Estimate a pregnant dog's due date from the breeding date, ovulation date, LH surge or first day of diestrus. See the whelping window, current gestation day, week-by-week progress and the ultrasound and X-ray timing points.

Calculate your pregnancy due date based on last menstrual period or conception date. Get a complete pregnancy timeline with trimester milestones, week-by-week development, and important dates.

Calculate gestational age in weeks and days from your last menstrual period or from ultrasound measurements (CRL, BPD, FL, HC). Get the estimated due date, trimester, a baby size comparison and week-by-week development milestones.

Enter two beta hCG blood test levels and the hours between draws to calculate doubling time, daily growth rate, and 48-hour rise percentage.

Calculate how many weeks pregnant you are based on your due date, last menstrual period (LMP), or conception date. Includes trimester progress, baby size comparison, and weekly milestones.

Enter your ovulation date or last menstrual period to estimate your implantation window, peak probability date, earliest pregnancy test day, and due date.

Enter the transfer date and day-3, day-5, or day-6, fresh or frozen. See the due date, retrieval date, equivalent LMP, and a 40-week timeline.

Create your personalized pregnancy calendar with week-by-week development milestones, trimester breakdown, baby size comparisons, key appointment reminders, and due date countdown.

Calculate your daily calorie needs during pregnancy based on pre-pregnancy weight, height, age, activity level, and gestational week. Uses IOM guidelines and Mifflin-St Jeor equation for accurate trimester-specific recommendations.

Enter weight and week to see the IOM 2009 gain range for a singleton or twin pregnancy, broken out by trimester.

Calculate your estimated conception date, fertile window, and due date based on your last menstrual period. Get a detailed pregnancy timeline with week-by-week milestones and ovulation tracking.

Enter the first day of your last period and cycle length to see fertile days, predicted ovulation, and an estimated due date.

Enter your last period start date, cycle length, and period duration to predict future periods, ovulation dates, and fertile windows for the next 6 cycles.

Enter the start dates of your last two periods to calculate your cycle length in days and estimate your next period, fertile window, and ovulation day.

Enter the first day of your last period, average cycle length, and luteal phase. Get fertile days, a predicted ovulation date, and a due date if you conceive.

Build a monthly calendar from your last period date, cycle length and luteal phase. View estimated fertile days, ovulation and cycle phases.

Enter the first day of your last period, average cycle length, and luteal phase. Get an ovulation date, fertile days, cycle phases, and a six-cycle forecast.