BMI 计算器
输入身高和体重,快速评估你的身体质量指数
BMI 参考标准(中国)
| 分类 | BMI 范围 | 健康风险 |
|---|---|---|
| 体重过低 | < 18.5 | 营养不良风险 |
| 正常体重 | 18.5 - 23.9 | 健康范围 |
| 超重 | 24.0 - 27.9 | 慢性病风险增加 |
| 肥胖 | ≥ 28.0 | 慢性病高风险 |
输入身高和体重,快速评估你的身体质量指数
| 分类 | BMI 范围 | 健康风险 |
|---|---|---|
| 体重过低 | < 18.5 | 营养不良风险 |
| 正常体重 | 18.5 - 23.9 | 健康范围 |
| 超重 | 24.0 - 27.9 | 慢性病风险增加 |
| 肥胖 | ≥ 28.0 | 慢性病高风险 |
BMI(Body Mass Index,身体质量指数)是国际上常用的衡量人体胖瘦程度以及是否健康的一个标准。它通过身高和体重的比例关系,给出一个简单的数值,帮助人们快速了解自己的体重状况。
BMI 的计算公式非常简单:
BMI = 体重(kg) ÷ 身高(m)²
例如,一个人身高 175cm,体重 70kg,那么他的 BMI = 70 ÷ (1.75 × 1.75) ≈ 22.9,属于正常范围。
需要注意的是,不同地区采用的 BMI 标准有所不同:
本计算器采用中国卫生行业标准(WS/T 428-2013),更适合中国人体质。英文版采用 WHO 国际标准。
因此,BMI 应作为初步筛查工具,而非诊断标准。如有健康疑虑,建议咨询专业医生。
BMI 只考虑身高和体重,而体脂率直接测量体内脂肪占比。体脂率更能反映真实的肥胖程度,但需要专业设备测量。
儿童需要使用年龄和性别对应的 BMI 百分位数,而非成人标准。建议使用专门的儿童 BMI 计算器。
这可能是"隐性肥胖"或内脏脂肪过多。建议测量腰围(男性 ≥90cm、女性 ≥85cm 为腹型肥胖),并增加核心训练。
Enter your height and weight to quickly assess your Body Mass Index
| Category | BMI Range | Health Risk |
|---|---|---|
| Underweight | < 18.5 | Malnutrition risk |
| Normal | 18.5 - 24.9 | Healthy range |
| Overweight | 25.0 - 29.9 | Increased disease risk |
| Obese | ≥ 30.0 | High disease risk |
BMI (Body Mass Index) is an internationally used standard to measure body fatness and assess health status. It provides a simple numerical value based on the ratio of height to weight.
The BMI formula is straightforward:
BMI = weight(kg) ÷ height(m)²
For example, a person who is 175cm tall and weighs 70kg has a BMI of 70 ÷ (1.75 × 1.75) ≈ 22.9, which falls within the normal range.
It's important to note that BMI standards vary by region:
This calculator uses the WHO international standard. For Asian users, the Chinese version applies local standards (WS/T 428-2013).
Therefore, BMI should be used as a preliminary screening tool, not a diagnostic standard.
BMI only considers height and weight, while body fat percentage directly measures fat proportion. Body fat percentage better reflects true obesity but requires professional equipment.
Children require age and gender-specific BMI percentiles rather than adult standards. Use a dedicated children's BMI calculator for accurate assessment.
This may indicate "hidden obesity" or excess visceral fat. Measure your waist circumference (≥90cm for men, ≥85cm for women indicates abdominal obesity) and increase core exercises.