BMI, body fat percentage, ideal weight, BMR, TDEE, lean mass, and waist-to-hip ratio calculators.
Calculate your Body Mass Index (BMI) to see where you fall on the underweight-to-obese scale. BMI uses your height and weight to estimate body fat.
Estimate your body fat percentage using the U.S. Navy method. All you need is a measuring tape and a few circumference measurements.
Find your ideal body weight using four well-known formulas: Devine, Robinson, Miller, and Hamwi. Compare results to find a healthy target.
Calculate your Basal Metabolic Rate — the number of calories your body burns at complete rest just to keep you alive.
Calculate your Total Daily Energy Expenditure — the total calories you burn per day including all activity. Essential for any diet or fitness goal.
Calculate your lean body mass — everything in your body that is not fat, including muscle, bones, organs, and water.
Calculate your waist-to-hip ratio (WHR) to assess how your body distributes fat. WHR is a key indicator of cardiovascular and metabolic health risk.
Estimate your VO2 max using the Uth et al. heart rate ratio method. VO2 max is the gold standard measure of cardiovascular fitness — find out where you rank for your age and gender.
Score your flexibility across three standard tests — sit and reach, shoulder reach, and hip flexor angle. Get an overall flexibility rating with personalized recommendations.
Calculate your Fat-Free Mass Index (FFMI) to assess your muscularity relative to your height. FFMI is widely used to evaluate natural muscular development — a normalized FFMI above 25 is extremely rare without performance-enhancing drugs.
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