🥑 净碳水计算器Net Carbs Calculator

使用说明与常见问题How-to & FAQ

「净碳水计算器」是什么？What is the Net Carbs Calculator tool?

按营养标签计算净碳水：美式标签用 总碳水 − 膳食纤维 − 糖醇（赤藓糖醇、阿洛酮糖全减，其他糖醇常按一半减）；欧盟/英国/中国等标签的「碳水化合物」本身已不含纤维，只需扣糖醇。Work out net carbs from a nutrition label: on US labels, total carbs − fiber − sugar alcohols (erythritol and allulose fully, others usually by half); on EU/UK-style labels "carbohydrate" already excludes fiber, so only sugar alcohols are taken off.

如何使用「净碳水计算器」？How do I use the Net Carbs Calculator tool?

在「净碳水计算器」中，填写「标签类型」、「碳水化合物（克/份）」、「膳食纤维（克）」、「糖醇（克，可选）」、「糖醇种类」等参数，结果会随输入实时计算并显示在下方。In the Net Carbs Calculator: Fill in "Label type", "Carbohydrate (g per serving)", "Fiber (g)", "Sugar alcohols (g, optional)", "Sugar alcohol type"; results are recalculated instantly as you type.

净碳水怎么算？How are net carbs calculated?

美式标签：净碳水 = 总碳水 − 膳食纤维 − 糖醇。赤藓糖醇和阿洛酮糖几乎不被吸收，通常全部扣除；麦芽糖醇、山梨糖醇等部分吸收，常见做法是扣一半。On a US label, net carbs = total carbs − fiber − sugar alcohols. Erythritol and allulose are barely absorbed, so they are usually subtracted in full; maltitol, sorbitol and similar are partly absorbed, so the common practice is to subtract half.

为什么要选标签类型？Why choose the label type?

美国和加拿大标签的总碳水包含纤维；欧盟、英国、澳洲、中国等标签的「碳水化合物」通常已不含纤维（纤维单列）。如果在这类标签上再减一次纤维，净碳水会被低估。US and Canadian total carbs include fiber, while EU, UK, Australian and Chinese labels usually list carbohydrate without fiber (fiber is shown separately). Subtracting fiber again on those labels would understate net carbs.

结果可以代替医生的建议吗？Can this replace medical advice?

不能。「净碳水计算器」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 Net Carbs Calculator gives estimates from common formulas; individuals differ, so consult a doctor or professional for health decisions.

「净碳水计算器」免费吗？需要注册吗？Is the Net Carbs Calculator free? Do I need an account?

「净碳水计算器」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 Net Carbs Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.