Free tools

Fitness Calculators

Know your numbers in under a minute. Every result is an educational estimate, not a diagnosis.

BMR Calculator

Calories your body burns at rest, using the Mifflin-St Jeor equation.

Daily calories to lose, maintain, or gain weight.

Estimate body fat percentage with the U.S. Navy method.

Daily protein for muscle gain, fat loss, or maintenance.

Your maintenance calories, including daily activity.

Body Mass Index and healthy weight range from height and weight.

Daily carbohydrate grams for your goal.

Calories burned walking, from steps, weight, and pace.

Daily fat grams for weight loss, gain, or maintenance.

Daily hydration based on weight, activity, and climate.