⚖️健康
BMI 计算器
Use this free BMI calculator to find your Body Mass Index based on height and weight. Understand your weight category — underweight, normal, overweight, or obese — in seconds.
Underweight
Normal weight
Overweight
Obese
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How it works
This bmi 计算器 runs entirely in your browser — no data is sent to any server. Simply fill in the fields above and the result updates instantly. You can copy the output with the copy button provided.
Frequently Asked Questions
BMI 是什么？
BMI（身体质量指数）= 体重(kg) ÷ 身高(m)²，用于评估体重是否健康。
正常 BMI 范围是多少？
18.5–24.9 为正常，低于 18.5 为偏轻，25–29.9 为超重，30 以上为肥胖。
BMI 对所有人都准确吗？
BMI 是筛查工具，不直接测量体脂。对运动员或老年人可能不够准确。