Estimate your body fat percentage with just a tape measure, using the U.S. Navy method, and see your fat and lean mass.
loading toolHow to use the body fat calculator
- Type your numbers in the boxes (pick your currency or units if asked).
- The answer updates as you type: no button to press.
- Copy the result, or share it on WhatsApp with one tap.
Questions
How do I measure?
Measure the neck just below the voice box, the waist at the navel (men) or narrowest point (women), and the hips at the widest point. Keep the tape flat, not tight.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
