什么是BMI？
BMI（身体质量指数）是使用身高和体重来评估健康状况的指标。它通过体重（公斤）除以身高（米）的平方来计算。
BMI计算公式
BMI = weight(kg) ÷ height(m)²
BMI = 体重（公斤）÷ 身高（米）²。例如，体重70公斤、身高175厘米的人的BMI为70 ÷ 1.75² = 22.9。
健康体重管理建议
- ✓BMI只是参考指标；它不考虑肌肉量或体脂率
- ✓定期锻炼和均衡饮食很重要
- ✓快速体重变化可能对健康有害
- ✓咨询医疗专业人士以获得准确的健康评估
📐 Body Fat Calculator
What is Body Fat Percentage?
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.
📏 Calculation Methods
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计算器
您的BMI
24.2
分类
超重
理想体重范围
53.5 - 66.2 kg
BMI分类
| BMI范围 | 分类 |
|---|---|
| 18.5 below | 体重过轻 |
| 18.5 - 22.9 | 正常 |
| 23 - 24.9 | 超重 |
| 25 - 29.9 | 肥胖 |
| 30 above | 重度肥胖 |
* Asian standard (WHO Asia-Pacific criteria)
🏃
BMI Result
24.2
✨ 超重Height 170cm, Weight 70kg
🔎 Compare results
Compare outcomes by conditions
#BMICalculator #Health #Fitness #Weight #Wellness
📊 Body Fat Categories
| 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 |
🔬 Body Fat Measurement Methods
| 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 |
🎯 Reducing Body Fat
- Maintain moderate calorie deficit (300-500kcal/day)
- Adequate protein intake (1.6-2.2g per kg bodyweight)
- Resistance training to preserve muscle
- At least 150 min cardio per week
- Adequate sleep (7-9 hours)
- Stress management (lower cortisol)
❓ FAQ
Which is more important: BMI or body fat %?
Body fat % reflects health more accurately. BMI cannot distinguish muscle from fat, while body fat % shows actual fat mass. Measure both if possible.
How fast can I reduce body fat?
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.
Why do women have higher body fat than men?
Women need more essential fat for reproductive function and hormonal regulation. Fat is stored in breasts, hips, and thighs - a healthy physiological feature.
What happens if body fat is too low?
Hormonal imbalance, weakened immunity, fatigue, hair loss, and menstrual irregularities in women. Do not maintain below 5% (men) or 12% (women) long-term.
💡 Measure under consistent conditions: morning, fasted, before exercise, same device. Trends matter more than single measurements.
📚 各地区计算规则说明
计算逻辑
采用公开的金融、贷款、比率与单位换算标准公式。
参考范围
参考公开标准与各地区常见实务规则。
前提条件
税费、费率、上限会因地区和机构而不同。
结果解读
结果可作为基准情景。正式决策前请与当地机构报价和税务规则对比。
地区默认值
货币: CNY
单位: metric
税务模型: US payroll estimate
法规提示
本工具基于地区预设进行估算。实际合同条款与法定上限可能因机构和当地法规而不同。
建议操作
- 正式申请前请至少比较 2~3 家本地机构方案。
- 再次核对费用、税务处理和提前还款条款。
- 用利率 +1~2% 与收入下降场景再测一次。
做真实决策前，请先确认当地机构的最新条款。