Fitness & Health Calculators

BMI, BMR, daily calorie, and body fat calculators to plan and track your health goals.

BMI Calculator

Free online BMI calculator to check your Body Mass Index. Get health tips, weight categories, and personalized fitness advice based on your BMI score.

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BMR Calculator

Calculate your Basal Metabolic Rate (BMR) with the Mifflin-St Jeor equation. Find out how many calories your body burns at complete rest.

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Calorie Calculator

Calculate your daily calorie needs (TDEE) based on age, gender, height, weight, and activity level. Get targets for weight loss, maintenance, and muscle gain.

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Body Fat Calculator

Estimate body fat percentage with the U.S. Navy circumference method using height, neck, waist, and hip measurements. Includes fat mass and lean mass.

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Know Your Numbers, Reach Your Goals

Effective fitness starts with measurement. Your BMI places you in a WHO weight category, your BMR tells you the calories your body burns at rest, your TDEE converts that into a real daily calorie target, and your body fat percentage reveals what the scale can't — your actual body composition.

All four tools use clinically validated equations: WHO BMI categories, the Mifflin-St Jeor BMR formula, standard activity multipliers, and the U.S. Navy circumference method. They are educational tools, not medical advice — consult a healthcare professional before major diet or exercise changes.