Health
Calculate your BMI, daily calories, pregnancy weeks, body fat percentage and macros with these free tools.
BMI Calculator
Calculate your body mass index from your weight and height.
Calorie Calculator (TDEE)
Calculate your basal metabolic rate (BMR) and total daily energy expenditure (TDEE).
Pregnancy due date calculator
Calculate your due date and gestational age from your last menstrual period.
Body fat calculator (Navy method)
Estimate your body fat percentage from neck, waist (and hip) measurements using the US Navy method.
Macro calculator
Calculate your daily protein, carb and fat grams from your target calories.
What you can calculate and how to read it
Weight and body composition
The BMI calculator relates weight to height and indicates whether your weight is in a healthy range, but it does not tell muscle from fat. The Body fat calculator uses the Navy method, which estimates the percentage from body measurements.
Calories and macros
The Calorie calculator estimates your daily energy expenditure based on your activity, and the Macro calculator splits those calories among protein, carbohydrates and fat according to the goal you choose.
Pregnancy and disclaimer
The Pregnancy due date calculator estimates the weeks of gestation and the likely due date. All results are estimates and are no substitute for an assessment by a healthcare professional.