Free Health & Fitness Calculators
Health and fitness calculators. These are general informational tools that show their formula and reference ranges. They are not a medical diagnosis.
BMI Calculator
Calculate your Body Mass Index (BMI) in metric or imperial units and see which World Health Organization weight category it falls into.
BMR Calculator
Estimate your Basal Metabolic Rate — the calories your body burns at rest — using the widely used Mifflin-St Jeor equation.
Calorie Calculator (TDEE)
Estimate the calories you burn in a day (your TDEE) by combining your Basal Metabolic Rate with an activity level.