BMI 计算器
免费 BMI 身体质量指数计算器，支持公制/英制单位，输入身高体重即可计算并给出健康建议。
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输入身高和体重后自动计算
BMI 仅供参考，不能替代专业医疗诊断。
相关关键词
How to Use BMI Calculator
Body Mass Index (BMI) is a widely used screening tool to categorize weight relative to height. Our BMI Calculator supports both metric (kg and cm) and imperial (lbs and inches) units. After entering your height and weight, the tool calculates your BMI and classifies it according to WHO guidelines: Underweight (below 18.5), Normal weight (18.5–24.9), Overweight (25–29.9), and Obese (30 and above). Note that BMI is a general indicator and does not account for muscle mass, bone density, age, or other factors. Consult a healthcare professional for a comprehensive health assessment.
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Select unit system
Choose between Metric (kg/cm) or Imperial (lbs/inches).
- 2
Enter your measurements
Input your height and weight in the appropriate fields.
- 3
View your result
Your BMI score and health category are displayed instantly with a color-coded indicator.
Frequently Asked Questions
Is BMI accurate for athletes?
BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults who have lost muscle. It's best used alongside other health metrics.
What is a healthy BMI range?
According to the WHO, a BMI of 18.5–24.9 is considered normal/healthy for adults.
Is my data stored?
No. All calculations are done locally in your browser. No personal health data is collected or transmitted.