Body Fat Percentage Calculator
Estimate body fat from formula, BMI, or circumference measurements
Pick a method below. Navy and Army require neck and waist (and hip for women). All math runs locally in your browser.Input details
Results
--Body fat
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Fat mass
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Lean mass (est.)
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Healthy weight range (BMI 18.5–24.9)
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Body fat category
0%50% (chart max)
| Category | Women | Men |
|---|---|---|
| Essential fat | 10%–13% | 2%–5% |
| Athletes | 14%–20% | 6%–13% |
| Fitness | 21%–24% | 14%–17% |
| Average | 25%–31% | 18%–24% |
| Obese | 32%+ | 25%+ |
Notes
- ADA option uses a BMI + age + sex equation (Deurenberg-style), commonly used for screening.
- U.S. Navy and Army methods use neck, waist, and height; women also need hip. Measure consistently (e.g., tape parallel to floor).
- BMI-based is a rough linear estimate from BMI only — least precise.
- Results are educational estimates, not medical advice.