Body Fat Percentage Calculator

The US Navy circumference method estimates body-fat percentage from height, neck, waist and (for women) hip. A male default of 172 cm height, 38 cm neck, 82 cm waist prints about 15% on this page. It is a tape-measure cartoon, not a DEXA scan, not medical advice, and not a recruiting-standard verdict for the Indian Army.

A screening number, not a diagnosis

Gyms in Gurgaon still call tape estimates “your body fat.” IndiaKit names the US Navy method so you know which cartoon you are in. Women must fill hip; men can ignore hip in the formula even if the field is visible.

The estimate we use

Male: 495 / (1.0324 − 0.19077 log10(waist−neck) + 0.15456 log10(height)) − 450. Female: 495 / (1.29579 − 0.35004 log10(waist+hip−neck) + 0.221 log10(height)) − 450. Heights and girths in centimetres.

Tape position (navel vs narrowest waist) changes the number. Military SOPs specify locations; this page does not watch you.

Essential fat, athletic, and obesity category tables vary. We only print a percent.

Male 172 cm / 38 cm neck / 82 cm waist

A 172 cm man in Gurgaon measures neck 38 cm and waist 82 cm. The Navy-style estimate is about 15%. A DEXA at a hospital may disagree by several points. He treats 15% as a tape number, not as a diagnosis.

See a clinician if a number worries you

Not medical advice. US Navy estimate only. Error is large for some body shapes. See a clinician for a measured reading. Not an Indian Armed Forces medical.

Common questions

Why do women need hip and men do not?

That is how the published Navy female equation is written. The male equation uses waist minus neck only.

Is 15% “fit”?

This page will not label you. Population tables differ by age and sex. A doctor or sports scientist can interpret, not a website.

Can I use inches?

No, the fields are centimetres. Convert with the unit tool first.