Body fat percentage is the proportion of fat in your total body weight. It reflects health and physique more accurately than BMI by distinguishing between muscle and fat mass.
US Navy Formula:
Male: 495 / (1.0324 - 0.19077×log10(waist-neck) + 0.15456×log10(height)) - 450
Female: 495 / (1.29579 - 0.35004×log10(waist+hip-neck) + 0.22100×log10(height)) - 450
BMI-Based Estimate:
Adult Male: (1.20 × BMI) + (0.23 × age) - 16.2
Adult Female: (1.20 × BMI) + (0.23 × age) - 5.4
| BMI範囲 | カテゴリー |
|---|---|
| 18.5 below | 低体重 |
| 18.5 - 22.9 | 標準 |
| 23 - 24.9 | 過体重 |
| 25 - 29.9 | 肥満 |
| 30 above | 高度肥満 |
* Asian standard (WHO Asia-Pacific criteria)
24.2
✨ 過体重Height 170cm, Weight 70kg
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BMI（体格指数）は、身長と体重を使用して健康状態を評価する指標です。体重（kg）を身長（m）の2乗で割って計算されます。
BMI = 体重（kg）÷ 身長（m）²。例えば、体重70kg、身長175cmの人のBMIは70 ÷ 1.75² = 22.9です。
| Category | Male | Female | Description |
|---|---|---|---|
| Essential Fat | 2-5% | 10-13% | Minimum for survival (risky) |
| Athletes | 6-13% | 14-20% | Peak performance level |
| Fitness | 14-17% | 21-24% | Healthy and fit physique |
| Average | 18-24% | 25-31% | Acceptable health range |
| Obese | 25%+ | 32%+ | Increased health risks |
| Method | Accuracy | Cost | Access |
|---|---|---|---|
| DEXA Scan | ±1-2% | High | Medical facilities |
| Hydrostatic | ±2-3% | Medium | Specialized facilities |
| InBody (BIA) | ±3-5% | Low | Gym/Home |
| Skinfold Calipers | ±3-5% | Very Low | Home/Trainer |
| US Navy Formula | ±3-5% | Free | Anywhere |
Body fat % reflects health more accurately. BMI cannot distinguish muscle from fat, while body fat % shows actual fat mass. Measure both if possible.
A healthy, sustainable rate is 0.5-1% per week, equivalent to 0.5-1kg weight loss. Faster rates cause muscle loss and metabolic slowdown.
Women need more essential fat for reproductive function and hormonal regulation. Fat is stored in breasts, hips, and thighs - a healthy physiological feature.
Hormonal imbalance, weakened immunity, fatigue, hair loss, and menstrual irregularities in women. Do not maintain below 5% (men) or 12% (women) long-term.
金融・ローン・比率・単位変換の公開標準を使用します。
公開された基準と各国で一般的な運用慣行を参照します。
税率・手数料・上限は地域や金融機関で異なります。
結果は基準シナリオとして活用してください。最終判断前に金融機関見積と税務条件を比較してください。
通貨: JPY
単位: metric
税計算モデル: US payroll estimate
本ツールは国別プリセットによる概算です。実際の契約条件や法的上限は金融機関・地域法令により異なる場合があります。
実際の契約前に、必ず現地機関の最新条件を確認してください。