Body Fat Calculator

Estimate body fat percentage with the US Navy method.

Measure without sucking in, at the widest point. Keep the tape snug but not tight.

How the Body Fat works

The Navy method uses tape measurements of your neck, waist (and hips for women) compared to height. It is a quick, low-cost estimate that tracks changes well over time.

Men: 495 ÷ (1.0324 − 0.19077·log₁₀(waist−neck) + 0.15456·log₁₀(height)) − 450

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