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Health Calculators

BMI, calories, body fat and everyday fitness metrics.

25 calculators

25 results

BMI Calculator PopularCalculate Body Mass Index with the WHO classification, healthy weight range and BMI Prime, in metric or…Open tool
Calorie Calculator (TDEE & Macros) PopularEstimate your daily calorie needs (BMR and TDEE) with the Mifflin-St Jeor equation, adjust for your goal, and…Open tool
BMR Calculator PopularFind your basal metabolic rate — the calories your body burns at complete rest.Open tool
TDEE Calculator PopularCalculate total daily energy expenditure and the calorie targets for cutting, maintaining or bulking.Open tool
Body Fat Calculator PopularEstimate body fat percentage with the US Navy tape method and see your fat and lean mass in kg.Open tool
Ideal Weight CalculatorCompare four classic ideal-body-weight formulas (Devine, Robinson, Miller, Hamwi) for your height.Open tool
Lean Body Mass CalculatorCalculate lean body mass from weight and height using the Boer formula.Open tool
Healthy Weight CalculatorSee the healthy weight range for your height and how far your current weight sits from it.Open tool
Water Intake CalculatorWork out how much water to drink per day from your weight, activity and the climate you live in.Open tool
Protein Intake CalculatorFind your daily protein target in grams based on weight, activity and your goal.Open tool
Macro CalculatorSplit your daily calories into protein, carbohydrate and fat grams for your chosen goal.Open tool
Pregnancy Due Date CalculatorEstimate the due date, current week of pregnancy and each trimester from your last period.Open tool
Ovulation CalculatorFind your likely ovulation day and fertile window from your last period and cycle length.Open tool
Heart Rate CalculatorCalculate maximum heart rate and the five training zones for fat burn, endurance and VO2 max work.Open tool
Blood Pressure CalculatorClassify a blood pressure reading and see pulse pressure and mean arterial pressure.Open tool
One Rep Max CalculatorEstimate your 1RM from any set and get the working weights for 60–95% of it.Open tool
Pace CalculatorConvert distance and finish time into pace per km, per mile and average speed.Open tool
Running Calorie CalculatorCalculate calories burnt running at any pace and duration.Open tool
Cycling Calorie CalculatorCalculate calories burnt cycling by speed and time.Open tool
Walking Calorie CalculatorCalculate calories burnt walking, from a stroll to a brisk hill climb.Open tool
BAC CalculatorEstimate blood alcohol concentration from drinks, body weight and time using the Widmark formula.Open tool
Body Surface Area CalculatorCalculate body surface area with the Du Bois and Mosteller formulas used for clinical dosing.Open tool
Waist to Hip Ratio CalculatorCheck your waist-to-hip and waist-to-height ratio and the health risk band they fall into.Open tool
Child Growth CalculatorCheck a child's BMI-for-age and estimate their adult height from the parents' heights.Open tool

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