Body Fat Percentage Calculator

Estimate your body fat percentage with the Relative Fat Mass (RFM) method, using only your height and waist.

How RFM is calculated

Relative Fat Mass was developed at Cedars-Sinai (Woolcott & Bergman, 2018). Men: 64 − 20 × (height ÷ waist). Women: 76 − 20 × (height ÷ waist). Measure your waist at the level of your belly button and use the same unit as your height. Categories follow the American Council on Exercise ranges.