Health & fitness calculators
BMI, calories, body fat, macros and more — evidence-based formulas, instant results, and nothing you enter ever leaves your device.
Calculators
BMI CalculatorCalculate your Body Mass Index from height and weight, with the WHO category and heaCalorie CalculatorEstimate daily calories to maintain, lose or gain weight using the Mifflin-St Jeor eBMR CalculatorFind how many calories your body burns at rest (Mifflin-St Jeor).Body Fat CalculatorEstimate body-fat percentage from waist, neck (and hip for women) measurements.Ideal Weight CalculatorIdeal body weight by the Devine, Robinson, Miller and Hamwi formulas, plus the healtWater Intake CalculatorHow much water should you drink a day based on weight and activity?Macro CalculatorSplit your daily calories into protein, carbs and fat for your goal.Running Pace CalculatorPace per km and mile from distance and time, with finish-time predictions for 5K, 10One Rep Max CalculatorEstimate your one-rep max from a weight and reps (Epley & Brzycki) with a percentageSleep CalculatorFind the best bedtime or wake-up time in 90-minute sleep cycles.Pregnancy Due Date CalculatorEstimate your due date from the first day of your last period (Naegele's rule), with