📏 英尺 ↔ 毫米Foot to Millimetre
英尺与毫米互算（1 ft = 304.8 mm）。本地换算，附常用相关单位。Convert foot and millimetre (1 ft = 304.8 mm). Runs locally with related units.
点击任意一行可复制该结果；小于 0.0001 或不小于 10¹⁵ 的数值用 × 10ⁿ 科学计数法显示Click any row to copy that result. Values below 0.0001 or at least 10¹⁵ are shown in × 10ⁿ notation
使用说明与常见问题How-to & FAQ
「英尺 ↔ 毫米」是什么？What is the Foot to Millimetre tool?
英尺与毫米互算（1 ft = 304.8 mm）。本地换算，附常用相关单位。Convert foot and millimetre (1 ft = 304.8 mm). Runs locally with related units.
如何使用「英尺 ↔ 毫米」？How do I use the Foot to Millimetre tool?
在「英尺 ↔ 毫米」中输入数值并选择原单位，表格会同时列出换算到所有其他单位的结果，可一键复制。Enter a value in the Foot to Millimetre and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 英尺等于多少毫米？How many millimetres in 1 foot?
1 ft = 304.8 mm（按国际定义系数）。1 ft = 304.8 mm (international definition).
如何把英尺换算成毫米？How do I convert foot to millimetre?
结果 = 数值 × 304.8。例如 1 ft = 304.8 mm。result = value × 304.8. Example: 1 ft = 304.8 mm.
英尺/毫米属于哪类单位？What kind of units are foot/millimetre?
二者同属「长度」量纲，可安全互算；也可打开「length-converter」做多单位对照。Both are length units; see also the length converter hub.
换算系数准确吗？Are the conversion factors exact?
「英尺 ↔ 毫米」采用国际单位制（SI）或公认标准中的定义值作为换算系数，结果保留约 10 位有效数字。The Foot to Millimetre uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「英尺 ↔ 毫米」免费吗？需要注册吗？Is the Foot to Millimetre free? Do I need an account?
「英尺 ↔ 毫米」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 Foot to Millimetre is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.