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U.S. Navy-Method Body-Fat Estimate

Estimate body-fat percentage from circumference measurements using the U.S. Navy-style logarithmic equations.

Educational estimate only. This calculator does not diagnose any condition, provide medical advice, prescribe treatment, or replace a doctor or qualified healthcare professional.

Your inputs

Your result

Enter your information and select Calculate to see the result.

How this calculator works

The selected circumference equation uses base-10 logarithms of height and circumference differences.

Change one assumption at a time to see which inputs have the greatest effect on the estimate.

Worked example

Measurement technique can materially change the result.

Limitations

Educational estimate only. This calculator does not diagnose any condition, provide medical advice, prescribe treatment, or replace a doctor or qualified healthcare professional. This is not a direct body-composition measurement and may be inaccurate for many bodies.

Review this educational estimate against current quotes, official information, and your own budget before making a financial decision.