Health & Fitness

Calorie, BMR, body fat, ideal weight, water intake, macro and body surface area calculators — free, instant, no sign-up. For information only, not medical advice.

Calorie Calculator (TDEE)

Estimate your daily calorie needs from your BMR and activity level.

BMR Calculator (Basal Metabolic Rate)

Calculate the calories your body burns at complete rest.

Body Fat Percentage Calculator

Estimate your body fat with the US Navy tape method or a BMI-based formula.

Ideal Weight Calculator

See your ideal weight by the Devine, Robinson and Miller formulas plus the healthy BMI range.

Water Intake Calculator

Estimate how much water you should drink per day from your weight and exercise.

Macro Calculator

Split your daily calories into protein, carbohydrate and fat grams.

Body Surface Area Calculator (BSA)

Calculate body surface area with the Mosteller and Du Bois formulas.