📏 长度单位换算Length Converter
米、厘米、毫米、公里、英寸、英尺、码、英里、海里、市尺、里等长度单位在线换算。Convert meters, cm, mm, km, inches, feet, yards, miles, nautical miles and Chinese units.
点击任意一行可复制该结果Click any row to copy that result
使用说明与常见问题How-to & FAQ
「长度单位换算」是什么？What is the Length Converter tool?
米、厘米、毫米、公里、英寸、英尺、码、英里、海里、市尺、里等长度单位在线换算。Convert meters, cm, mm, km, inches, feet, yards, miles, nautical miles and Chinese units.
如何使用「长度单位换算」？How do I use the Length Converter tool?
在「长度单位换算」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 Length Converter and choose the source unit; the table shows the value in every other unit at once, ready to copy.
换算系数准确吗？Are the conversion factors exact?
「长度单位换算」采用国际标准定义的换算系数（如 1 英寸 = 2.54 厘米、1 磅 = 0.45359237 千克），结果保留约 10 位有效数字。The Length Converter uses internationally defined factors (e.g. 1 in = 2.54 cm, 1 lb = 0.45359237 kg) and shows about 10 significant digits.
「长度单位换算」免费吗？需要注册吗？Is the Length Converter free? Do I need an account?
「长度单位换算」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 Length Converter is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.