JamunJar
Calculators

Body Fat % Calculator

Estimate your body fat percentage, fat mass and lean mass from your height, weight and clothing sizes — no tape needed.

Your details

Body and clothing sizes

Gender
Pant waist (inches)
Shirt chest size

Method

How this estimate works

This uses the US Navy circumference formula. Instead of a tape, it converts your pant waist and shirt chest sizes to centimetres and estimates neck (and, for women, hip) from them, so treat the result as an estimate. Healthy ranges used: 10–18% for men and 18–25% for women.