Free Health & Fitness Calculators Online
BMI, calorie/TDEE, body fat, ideal weight, and macro calculators with science-based formulas.
BMI Calculator
Body Mass Index with gauge, categories, and healthy weight range.
Open tool →Calorie & TDEE Calculator
BMR, TDEE, goal calories, and macro split across 4 formulas.
Open tool →Body Fat Calculator
Navy, BMI, and skinfold methods with lean vs fat mass.
Open tool →Ideal Weight Calculator
Five ideal-weight formulas plus a healthy BMI range.
Open tool →Macro Calculator
Protein, carb, and fat targets for keto, low-carb, and balanced diets.
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