Accurate, private and beautifully designed tools for BMI, calories, body fat, ideal weight, macros, water intake, sleep and pregnancy.
Calculate your Body Mass Index and see your healthy weight range with clear insights.
PopularEstimate your daily calorie needs for maintenance, cutting or lean bulking.
Most UsedEstimate body fat percentage using the reliable U.S. Navy method.
AccurateGet a healthy weight range using four professional formulas.
QuickCalculate daily protein, carbs and fat targets based on your calorie goal.
ProFind out how much water you should drink based on weight, activity and climate.
DailyWake up refreshed by aligning with natural 90-minute sleep cycles.
Better SleepEstimate your due date from the first day of your last menstrual period.
TrustedSet a realistic daily calorie target for steady fat loss based on your TDEE.
Fat lossFind your ideal daily protein intake for fat loss, muscle gain or maintenance.
NutritionEstimate your 1RM from any weight and rep count for smarter programming.
StrengthEstimate calories burned walking based on weight, pace and distance or time.
CardioEstimate lean body mass from body fat % or height and weight (Boer formula).
CompositionPick any calculator — BMI, TDEE, body fat, macros, sleep and more. All tools are free and private.
Fill in a few simple fields. No account needed. Your data stays on your device.
See accurate numbers plus plain-language insights so you know what the result actually means.
Use the numbers to guide nutrition, training or lifestyle changes — or grab a detailed BodyRatio report.
All calculations run in your browser. Nothing is stored or sent to any server.
Mifflin-St Jeor, U.S. Navy method, Devine, Robinson, Miller and Hamwi formulas.
Every result includes practical tips so you know what the numbers mean.
Clean design that works perfectly on mobile. No unnecessary clutter.
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