Body Fat Calculator
Accurate calculators with instant results.
What does this tool do?
Estimate body fat percentage with the US Navy method.
Key features
- Instant calculation
- Accurate formulas
- Clear result breakdown
- Mobile-friendly inputs
Body Fat Calculator
Estimate body fat percentage with the US Navy method.
What does this tool do?
Estimate body fat percentage with the US Navy method. This free online tool works instantly in your browser — no signup, no download, no watermark.
Key Features
- US Navy formula
- Male and female calculations
- Uses simple tape measurements
- Instant result
Measure waist at the navel and neck below the Adam's apple with a tape measure. This is an estimate, not a medical diagnosis.
Frequently Asked Questions
What is the US Navy method?
It is a formula developed by the US Navy that estimates body fat from height and tape-measure circumferences (neck, waist, and hips for women).
How accurate is this estimate?
It is reasonably close for most people but less precise than DEXA scans or hydrostatic weighing. Treat it as a guideline.
How should I measure my waist?
Measure around the navel with a soft tape, relaxed and breathing normally, without sucking in your stomach.
Is this medical advice?
No. This tool gives a fitness estimate only. Consult a doctor for health assessments.
How to Use Body Fat Calculator
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