Health Calculators

Free calculators for calories, macros, body composition and activity. Instant results, no sign-up.

Calories & energy

Calorie Calculator

Your daily calories to maintain, lose or gain weight.

TDEE Calculator

Total daily energy expenditure with loss and gain targets.

BMR Calculator

The calories your body burns at rest.

Nutrition

Macro Calculator

Daily protein, carbs and fat for your goal.

Protein Intake Calculator

How much protein you need per day and per meal.

Body & weight

BMI Calculator

Your Body Mass Index and healthy weight range.

Body Fat Calculator

Body fat %, lean body mass and waist-to-height ratio.

Ideal Weight Calculator

Your ideal weight range from four formulas.

Weight Loss Calculator

How long it takes to reach your goal weight.

Activity

Exercise Calories Calculator

Calories burned by activity, weight and duration.

Steps Calculator

Steps to calories, distance and walking time.

About our calculators

Every calculator uses a published, widely used formula: Mifflin-St Jeor for energy, the U.S. Navy tape method for body fat and the WHO categories for BMI.

They are free, work on any device and need no account.

Important

Results are estimates for healthy adults, not medical advice. Talk to a healthcare professional before big changes to your diet or training, and if you are pregnant, under 18 or managing a health condition.