Body Fat Calculator
Calculate your body fat percentage using the US Navy method. Enter height, neck, waist, and hip (for women) circumferences.
How to Calculate Body Fat Percentage
- Select your gender and enter your height in centimeters.
- Measure and enter your neck circumference (just below the Adam's apple) and waist circumference (at navel level for men, narrowest point for women).
- Women should also measure and enter hip circumference at the widest point.
- Click Calculate to receive your body fat percentage and category classification.
クイックリファレンス
| 変換元 | 変換先 |
|---|---|
| Men (healthy) | 15–20% body fat |
| Men (athletes) | 6–13% body fat |
| Women (healthy) | 20–25% body fat |
| Women (athletes) | 14–20% body fat |
| Essential fat (M) | 2–5% |
| Essential fat (F) | 10–13% |
使用例
- •Tracking changes in body composition during a fat-loss or muscle-building training cycle.
- •Assessing whether an athlete's body fat is within the optimal range for their sport.
- •Monitoring progress on a cutting phase when the scale weight stays the same but body composition is improving.
計算式
US Navy formula: Men: 495 / (1.0324 − 0.19077×log10(waist − neck) + 0.15456×log10(height)) − 450. Women: 495 / (1.29579 − 0.35004×log10(waist + hip − neck) + 0.22100×log10(height)) − 450.
よくある質問
How do I measure neck circumference?
Measure around the neck just below the Adam's apple, keeping the tape horizontal.
How do I measure waist circumference?
For men, measure at navel level. For women, measure at the narrowest part of the waist.
What is a healthy body fat percentage?
For men: 14–17% (fitness), 18–24% (average). For women: 21–24% (fitness), 25–31% (average).
How accurate is the US Navy method?
The US Navy method has an error margin of about 3–4%. For more precise data, consider DEXA scanning or hydrostatic weighing.