🏃 Health Calculators

Evidence-based health calculators using WHO BMI scale, Mifflin-St Jeor calorie formula, and other clinical standards.

BMI Calculator

Body Mass Index in metric or imperial — WHO scale with healthy weight range.

Calorie Calculator (TDEE)

Daily calorie needs using Mifflin-St Jeor formula. All activity levels.

Health Calculators Using Clinical Formulas

Our health calculators use established clinical formulas: BMI uses the WHO standard (kg/m²), and the calorie calculator uses the Mifflin-St Jeor equation (1990) — the most accurate BMR formula for most adults. Every result includes the formula and its limitations.