Fitness & Health Calculators

Reach your health goals with free fitness calculators - BMI, body fat, ideal weight, TDEE/BMR, calorie and macro targets, water intake, and heart-rate training zones.

9 calculators3 categories2 popular tools

Popular Fitness & Health Calculators

BMI CalculatorCalculate Body Mass Index.Open calculator TDEE/BMR CalculatorCalculate daily calorie needs.Open calculator

Body Composition

BMI CalculatorPopularCalculate Body Mass Index.Open calculator Body Fat CalculatorEstimate body fat percentage.Open calculator Ideal Weight CalculatorFind your ideal body weight range.Open calculator

Calorie & Nutrition

TDEE/BMR CalculatorPopularCalculate daily calorie needs.Open calculator BMR CalculatorCalculate basal metabolic rate.Open calculator Calorie CalculatorEstimate daily calorie requirements.Open calculator Macro CalculatorCalculate protein, carbs, and fat.Open calculator Water Intake CalculatorCalculate recommended daily water intake.Open calculator

Performance

Heart Rate ZonesCalculate training zones.Open calculator

Fitness & Health Calculator FAQs

What is the difference between BMR and TDEE?

BMR is the calories your body burns at rest. TDEE adds your activity level and represents your total daily calorie needs for maintenance. Both calculators are available and factor age, sex, height, and weight.

How do I calculate my macros?

The Macro Calculator turns your calorie target into protein, carb, and fat gram targets, adjustable for keto, low-carb, or balanced diet goals.

Are the BMI and body fat calculators accurate?

They use standard formulas (BMI by height/weight; body fat via the U.S. Navy method). Treat results as estimates - accurate to a few percent for most people.

Can I find my training heart rate zones?

Yes. The Heart Rate Zones calculator computes zones from your age and resting heart rate using the Karvonen method.