Body & Weight Calculators

Calculate your BMI from height and weight in feet/inches or centimetres. See your CDC weight category, BMI Prime, and the healthy weight range for your height.

Estimate your body fat percentage from tape measurements using the US Navy formula. See your fat mass, lean mass, and where you sit against ACE fitness categories.

See your ideal body weight by the Devine, Robinson, Miller, and Hamwi formulas, alongside the healthy BMI weight range clinicians actually use.

Divide your waist by your height to assess central body fat — the measure NICE recommends alongside BMI, using a single 0.5 threshold that works across sexes.