⚖️ BMI 计算器（身体质量指数，公制/英制，健康体重范围）BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range)
计算成人 BMI = 体重(kg) ÷ 身高(m)²，支持公制和英制（磅、英尺英寸），按 WHO 分级（也可选亚洲标准），并给出该身高的健康体重范围和 BMI Prime。BMI 不区分肌肉和脂肪，仅供筛查参考。本地处理。Adult BMI = weight (kg) ÷ height (m)², metric or imperial (pounds, feet and inches), classified by WHO (or Asian) cut-offs, with the healthy weight range for your height and BMI Prime. BMI does not tell muscle from fat and is only a screening measure. Processed locally.
使用说明与常见问题How-to & FAQ
「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」是什么？What is the BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range) tool?
计算成人 BMI = 体重(kg) ÷ 身高(m)²，支持公制和英制（磅、英尺英寸），按 WHO 分级（也可选亚洲标准），并给出该身高的健康体重范围和 BMI Prime。BMI 不区分肌肉和脂肪，仅供筛查参考。本地处理。Adult BMI = weight (kg) ÷ height (m)², metric or imperial (pounds, feet and inches), classified by WHO (or Asian) cut-offs, with the healthy weight range for your height and BMI Prime. BMI does not tell muscle from fat and is only a screening measure. Processed locally.
如何使用「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」？How do I use the BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range) tool?
在「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」中，填写「单位」、「体重（kg）」、「身高（cm）」、「体重（lb）」、「身高（英尺）」等参数，结果会随输入实时计算并显示在下方。In the BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range): Fill in "Units", "Weight (kg)", "Height (cm)", "Weight (lb)", "Height (ft)"; results are recalculated instantly as you type.
BMI 怎么计算？How is BMI calculated?
BMI = 体重(kg) ÷ 身高(m)²。例如 70 kg、175 cm：70 ÷ 1.75² = 22.9。英制可用 703 × 磅 ÷ 英寸²。BMI = weight (kg) ÷ height (m)². For 70 kg and 175 cm: 70 ÷ 1.75² = 22.9. In imperial units use 703 × pounds ÷ inches².
WHO 标准和亚洲标准有什么不同？How do the WHO and Asian cut-offs differ?
WHO 国际标准：18.5–24.9 正常，25–29.9 超重，≥30 肥胖。WHO 亚太标准：18.5–22.9 正常，23–27.4 超重，≥27.5 肥胖，因为亚洲人群在较低 BMI 时代谢风险就会升高。WHO international: 18.5–24.9 normal, 25–29.9 overweight, 30+ obese. WHO Asia-Pacific: 18.5–22.9 normal, 23–27.4 overweight, 27.5+ obese, because metabolic risk rises at lower BMI in Asian populations.
能举个计算实例吗？Can you show a worked example?
例如在「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」中填 单位 = 公制 kg/cm，体重（kg） = 70，身高（cm） = 175，分级标准 = WHO 国际，结果区显示：BMI：22.9；分级：正常；健康体重范围：56.7–76.3 kg；BMI Prime：0.91；⚠ 适用于 18 岁以上成人；儿童青少年请用按年龄和性别的 BMI 百分位；运动员、孕妇和老人结果可能偏差For example, entering Units = Metric kg/cm, Weight (kg) = 70, Height (cm) = 175, Cut-offs = WHO international in the BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range) gives: BMI: 22.9; Category: normal weight; Healthy weight range: 56.7–76.3 kg; BMI Prime: 0.91; ⚠ for adults 18+; children and teens need age- and sex-specific BMI percentiles; results can mislead for athletes, pregnancy and older adults
哪些输入会被检查？Which inputs are validated?
「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」会检查这些输入——「体重（kg）」：须大于 0且不大于 700；「身高（cm）」：须大于 0且不大于 280；「体重（lb）」：须大于 0且不大于 1,500；「身高（英尺）」：须为不小于 0且不大于 9的整数；「身高（英寸）」：可留空；填写时须不小于 0且不大于 11.99；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range) checks its inputs — "Weight (kg)": must be more than 0 and at most 700; "Height (cm)": must be more than 0 and at most 280; "Weight (lb)": must be more than 0 and at most 1,500; "Height (ft)": must be at least 0 and at most 9 (a whole number); "Height (in)": optional; if given it must be at least 0 and at most 11.99; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」的设置：「单位」可选 公制 kg/cm、英制 lb/ft·in（默认 公制 kg/cm）；「体重（kg）」默认 70；「身高（cm）」默认 175；「体重（lb）」默认 154；「身高（英尺）」默认 5；「身高（英寸）」默认 9；「分级标准」可选 WHO 国际、亚洲（WHO 亚太）（默认 WHO 国际）。每次生成结果都按当前设置处理。Settings in the BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range) — "Units": Metric kg/cm, Imperial lb/ft·in (default Metric kg/cm); "Weight (kg)" default 70; "Height (cm)" default 175; "Weight (lb)" default 154; "Height (ft)" default 5; "Height (in)" default 9; "Cut-offs": WHO international, Asian (WHO Asia-Pacific) (default WHO international). The result always uses the current settings.
结果可以代替医生的建议吗？Can this replace medical advice?
不能。「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」基于常用公式给出估算，个体差异较大，如有健康问题请咨询医生或专业人士。No. The BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range) gives estimates from common formulas; individuals differ, so consult a doctor or professional for health decisions.
「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」免费吗？需要注册吗？Is the BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range) free? Do I need an account?
「BMI 计算器（身体质量指数，公制/英制，健康体重范围）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The BMI Calculator (Body Mass Index, Metric/Imperial, Healthy Weight Range) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.