Body Fat Calculator
The US Navy method estimates body fat from height, neck and waist measurements. Add hip measurements for a more accurate female estimate.
Body fat percentage
18.7%
Category
Average
How this was worked out
- MethodUS Navy (male): uses height, waist and neck
- Measure carefullyMeasure the waist at the navel, the neck below the larynx, and the hips at their widest point.
Tape-measure methods have a margin of error of roughly ±3–5 percentage points. Consistency matters more than absolute accuracy.
Important
This tool provides an estimate for general information only. It is not a medical diagnosis, and it does not replace advice from a qualified health professional. Body composition, ethnicity, age and medical history all affect the real picture — speak to a doctor or dietitian before making changes to your diet, training or medication.Formula
Example
Input
Male, 178 cm, waist 88 cm, neck 38 cm
Result
≈ 17.5% body fat
Frequently asked questions
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