Calculators
Health & fitness calculators
Estimate common fitness metrics with clear assumptions and a responsible-use note.
01BMI CalculatorEstimate body mass index from height and weight.02BMR CalculatorEstimate resting energy needs using the Mifflin–St Jeor equation.03TDEE CalculatorEstimate daily energy expenditure from BMR and activity.04Calorie CalculatorEstimate daily calories from age, body size and activity.05Ideal Weight CalculatorShow a height-based reference range using a common formula.06Running Pace CalculatorCalculate pace from distance and time.07Running Speed CalculatorCalculate speed from distance and time.