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📏 比例尺换算计算器Scale Conversion Calculator
按比例尺（如 1:24、1:100、1:50,000）在实物尺寸和模型或图纸尺寸之间换算，也能由一组实物和模型尺寸求出比例；支持不同的长度单位。Convert between real size and model or drawing size at a scale such as 1:24, 1:100 or 1:50,000, or find the scale from a real and a model size, with different length units on each side.
使用说明与常见问题How-to & FAQ
「比例尺换算计算器」是什么？What is the Scale Conversion Calculator tool?
按比例尺（如 1:24、1:100、1:50,000）在实物尺寸和模型或图纸尺寸之间换算，也能由一组实物和模型尺寸求出比例；支持不同的长度单位。Convert between real size and model or drawing size at a scale such as 1:24, 1:100 or 1:50,000, or find the scale from a real and a model size, with different length units on each side.
如何使用「比例尺换算计算器」？How do I use the Scale Conversion Calculator tool?
在「比例尺换算计算器」中，填写「计算」、「比例 1 : n 中的 n」、「实物尺寸」、「实物单位」、「模型 / 图纸尺寸」等参数，结果会随输入实时计算并显示在下方。In the Scale Conversion Calculator: Fill in "Calculate", "n in the scale 1 : n", "Real size", "Real unit", "Model or drawing size"; results are recalculated instantly as you type.
1:24 是什么意思？What does 1:24 mean?
模型上的 1 个单位代表实物的 24 个单位：4.8 米长的汽车做成 1:24 模型是 20 厘米。地图 1:50,000 表示图上 1 厘米代表实地 500 米。One unit on the model stands for 24 units in reality: a 4.8 m car is 20 cm at 1:24. On a 1:50,000 map, 1 cm stands for 500 m on the ground.
常见模型比例有哪些？What are common model scales?
汽车模型常见 1:18、1:24、1:43、1:64；火车模型 HO 为 1:87（美国 NMRA 标准实际为 1:87.1）、N 为 1:160；建筑图纸常用 1:50、1:100。Model cars: 1:18, 1:24, 1:43, 1:64; model trains: HO 1:87 (1:87.1 in the NMRA standard), N 1:160; architectural drawings: 1:50, 1:100.
「比例尺换算计算器」免费吗？需要注册吗？Is the Scale Conversion Calculator free? Do I need an account?
「比例尺换算计算器」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 Scale Conversion 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.