Body Composition

Body composition is the question of what your weight is actually made of - fat, muscle, bone, and water - and whether that mix sits in a healthy range for your height. These three calculators come at it from different angles. The BMI Calculator classifies your weight against your height and reports BMI Prime and a healthy weight range. The Body Fat Calculator estimates the share of your weight that is fat tissue, using the Deurenberg formula, and places it in a category. The Ideal Weight Calculator gives a reference target weight from your height and gender using the Devine, Robinson, Miller, and Hamwi formulas.

No single number tells the whole story, which is why they cross-link: BMI is a fast screen, body fat percentage is the more direct measure of composition, and ideal weight is a reference point to compare against. All three run in your browser and show their formula and working.