Skip to content
SEHATDOC clinic and hospital software

Body fat calculator

Estimate your body fat percentage with a tape measure, using the US Navy circumference method.

Height

Your result appears here as you type.

How to measure

  • Height: without shoes.
  • Neck: just below the voice box.
  • Waist: at the navel for men, and at the narrowest point for women.
  • Hips (women): at the widest point.
  • Keep the tape flat and do not pull it tight.

Body fat ranges

These are American Council on Exercise categories.

CategoryWomen / men
Essential fat10 to 13% / 2 to 5%
Athletes14 to 20% / 6 to 13%
Fitness21 to 24% / 14 to 17%
Average25 to 31% / 18 to 24%
Obesity32% and over / 25% and over

Last checked 31 October 2026. This calculator gives an estimate for information. It is not a diagnosis or medical advice, so talk to a doctor about your result.

References: Hodgdon JA, Beckett MB. Prediction of percent body fat for U.S. Navy men and women. Naval Health Research Center, 1984.

Run your clinic on SehatDoc

Appointments, records, prescriptions and billing in one system, from PKR 4,000 a month.

See the features

Common questions

Still unsure? Send us the question and a person — not a bot — will answer it.

How accurate is the Navy method?

It is a reasonable estimate, usually within a few percentage points of lab methods, if you measure carefully. Use the trend rather than one number.

What is a healthy body fat percentage?

It depends on age and sex. Roughly 25 to 31% is average for women and 18 to 24% for men.

Is body fat better than BMI?

It tells you more about your make-up, because BMI cannot separate fat from muscle. Using both, with waist size, is better than either alone.

Try it with next week’s patients

Plans start at PKR 4,000 a month, billed in rupees, with setup and staff training included. Bring over next week’s patients and see whether the evening session runs any easier.

Create your clinic accountBook a walkthrough instead

Setup help and staff training are included on every plan.