ToolPronto
Body-fat estimate
Estimate adult body-fat percentage from tape measurements with the U.S. Navy circumference method.
Body-fat estimate
Estimate adult body-fat percentage from tape measurements with the U.S. Navy circumference method.
Your entries stay in this browser and are never included in analytics.
Measure on bare skin with the tape level and snug, without compressing the body. Repeat each measurement before calculating.
This estimate uses the U.S. Navy circumference equation. With the same waist, a smaller neck produces a higher estimate; recheck every measurement before relying on it.
Estimated body fat
- Method
- U.S. Navy
- Estimated range
- 24.4–31.4%
- Measurement used
- 139 cm
How it was calculated
495 ÷ (1.29579 − 0.35004 log10(W + H − N) + 0.221 log10(L)) − 450; ±3.5 ppBody-fat estimate
Estimate adult body-fat percentage from tape measurements with the U.S. Navy circumference method. Your entries stay in this browser and are never included in analytics. Tape formulas can differ from clinical measurement and must not be used as a diagnosis.
Body-fat estimate — How it was calculated
- Get a rough tape-measure estimate for personal trend tracking.
- Repeat the same method over time without treating the result as a diagnosis.
- See how the supported circumference formula responds to corrected measurements.
How it was calculated
- Estimate adult body-fat percentage from tape measurements with the U.S. Navy circumference method.
- Your entries stay in this browser and are never included in analytics.
- Tape formulas can differ from clinical measurement and must not be used as a diagnosis.