Fitness & Body

Fitness and body calculators estimate body size, composition and training numbers from a few measurements. Start with the BMI calculator, then compare it with the body fat calculator, which uses tape measurements, and the ideal weight calculator, which applies the Devine formula.

Other tools cover healthy weight ranges, the overweight check, lean body mass, body surface area, the Army body fat method, body shape, fat intake and a legacy points-style food value. For training, the target heart rate calculator uses the Karvonen method, the one-rep max calculator estimates your heaviest single lift, and the pace calculator converts race time and distance into pace.

Body measures such as BMI are screening tools and do not show where fat is stored or how fit you are. Read what BMI means and how body fat is measured for the limits, and ask a professional before making big changes.