⚓ 美国海军体脂计算器（男女，cm/英寸）US Navy Body Fat Calculator (Men & Women, cm or in)
用美国海军围度法估算体脂率：男性用身高、颈围、腰围，女性另加臀围。可用厘米或英寸，填写体重时还会给出脂肪量和去脂体重，并按 ACE 分级说明所在区间。仅为估算，不能代替医学检查。本地处理。Estimate body fat with the US Navy circumference method: height, neck and waist for men, plus hips for women. Use centimetres or inches; add your weight to also get fat mass and lean mass, and see which ACE category the result falls in. This is an estimate, not a medical test. Processed locally.
使用说明与常见问题How-to & FAQ
「美国海军体脂计算器（男女，cm/英寸）」是什么？What is the US Navy Body Fat Calculator (Men & Women, cm or in) tool?
用美国海军围度法估算体脂率：男性用身高、颈围、腰围，女性另加臀围。可用厘米或英寸，填写体重时还会给出脂肪量和去脂体重，并按 ACE 分级说明所在区间。仅为估算，不能代替医学检查。本地处理。Estimate body fat with the US Navy circumference method: height, neck and waist for men, plus hips for women. Use centimetres or inches; add your weight to also get fat mass and lean mass, and see which ACE category the result falls in. This is an estimate, not a medical test. Processed locally.
如何使用「美国海军体脂计算器（男女，cm/英寸）」？How do I use the US Navy Body Fat Calculator (Men & Women, cm or in) tool?
在「美国海军体脂计算器（男女，cm/英寸）」中，填写「性别」、「单位」、「身高」、「颈围」、「腰围（男：肚脐处；女：最细处）」等参数，结果会随输入实时计算并显示在下方。In the US Navy Body Fat Calculator (Men & Women, cm or in): Fill in "Sex", "Units", "Height", "Neck", "Waist (men: at navel; women: narrowest)"; results are recalculated instantly as you type.
用的是什么公式？Which formula is used?
男性：体脂 % = 495 ÷ (1.0324 − 0.19077·log10(腰围 − 颈围) + 0.15456·log10(身高)) − 450；女性：495 ÷ (1.29579 − 0.35004·log10(腰围 + 臀围 − 颈围) + 0.22100·log10(身高)) − 450，单位为厘米。英寸会先换算成厘米。Men: body fat % = 495 / (1.0324 − 0.19077·log10(waist − neck) + 0.15456·log10(height)) − 450. Women: 495 / (1.29579 − 0.35004·log10(waist + hips − neck) + 0.22100·log10(height)) − 450, all in centimetres. Inches are converted to centimetres first.
该怎么量？How should I measure?
颈围量喉结下方，卷尺略向前下倾斜；男性腰围在肚脐高度，女性腰围在最细处；女性臀围在臀部最宽处。放松站立、不要吸气收腹，每处量两三次取平均。Measure the neck just below the larynx with the tape sloping slightly down at the front; waist at the navel for men and at the narrowest point for women; hips at the widest point for women. Stand relaxed without pulling in, and average two or three readings.
分级是怎么划分的？What do the categories mean?
采用美国运动委员会 (ACE) 的区间。女性：必需脂肪 10–13 %、运动员 14–20 %、健康 21–24 %、一般 25–31 %、肥胖 32 % 以上；男性：2–5 %、6–13 %、14–17 %、18–24 %、25 % 以上。These are the American Council on Exercise ranges. Women: essential 10–13 %, athletes 14–20 %, fitness 21–24 %, average 25–31 %, obese 32 %+. Men: 2–5 %, 6–13 %, 14–17 %, 18–24 %, 25 %+.
能举个计算实例吗？Can you show a worked example?
例如在「美国海军体脂计算器（男女，cm/英寸）」中填 性别 = 男，单位 = 厘米、千克，身高 = 175，颈围 = 38，腰围（男：肚脐处；女：最细处） = 85，体重（可选） = 75，结果区显示：体脂率：16.9 %；ACE 分级：健康；脂肪量：12.7 kg；去脂体重：62.3 kg；⚠ 围度法误差通常为 ±3–4 个百分点，只作参考，不是诊断。For example, entering Sex = Male, Units = cm, kg, Height = 175, Neck = 38, Waist (men: at navel; women: narrowest) = 85, Weight (optional) = 75 in the US Navy Body Fat Calculator (Men & Women, cm or in) gives: Body fat: 16.9 %; ACE category: Fitness; Fat mass: 12.7 kg; Lean mass: 62.3 kg; ⚠ The tape method is typically within about ±3–4 points; it is a guide, not a diagnosis.
哪些输入会被检查？Which inputs are validated?
「美国海军体脂计算器（男女，cm/英寸）」会检查这些输入——「身高」、「颈围」、「腰围（男：肚脐处；女：最细处）」：必须填写，须大于 0；「臀围（女性）」：所选方式用到时必须填写，须大于 0（女性必填）；「体重（可选）」：须大于 0；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 US Navy Body Fat Calculator (Men & Women, cm or in) checks its inputs — "Height", "Neck", "Waist (men: at navel; women: narrowest)": required, must be greater than 0; "Hips (women)": required when the chosen option uses it, must be greater than 0 (required for women); "Weight (optional)": must be greater than 0; 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?
「美国海军体脂计算器（男女，cm/英寸）」的设置：「性别」可选 男、女（默认 男）；「单位」可选 厘米、千克、英寸、磅（默认 厘米、千克）；「身高」默认 175；「颈围」默认 38；「腰围（男：肚脐处；女：最细处）」默认 85；「臀围（女性）」默认 95；「体重（可选）」默认 75。每次生成结果都按当前设置处理。Settings in the US Navy Body Fat Calculator (Men & Women, cm or in) — "Sex": Male, Female (default Male); "Units": cm, kg, in, lb (default cm, kg); "Height" default 175; "Neck" default 38; "Waist (men: at navel; women: narrowest)" default 85; "Hips (women)" default 95; "Weight (optional)" default 75. 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。「美国海军体脂计算器（男女，cm/英寸）」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 US Navy Body Fat Calculator (Men & Women, cm or in) gives estimates from common formulas; individuals differ, so consult a doctor or professional for health decisions.
「美国海军体脂计算器（男女，cm/英寸）」免费吗？需要注册吗？Is the US Navy Body Fat Calculator (Men & Women, cm or in) free? Do I need an account?
「美国海军体脂计算器（男女，cm/英寸）」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 US Navy Body Fat Calculator (Men & Women, cm or in) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.