🌾 杜纳姆 ↔ 圆密耳Dunam to Circular mil
杜纳姆与圆密耳互算（1 dunam = 1.97352524139e+12 cmil）。本地换算，附常用相关单位。Convert dunam and circular mil (1 dunam = 1.97352524139e+12 cmil). 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
「杜纳姆 ↔ 圆密耳」是什么？What is the Dunam to Circular mil tool?
杜纳姆与圆密耳互算（1 dunam = 1.97352524139e+12 cmil）。本地换算，附常用相关单位。Convert dunam and circular mil (1 dunam = 1.97352524139e+12 cmil). Runs locally with related units.
如何使用「杜纳姆 ↔ 圆密耳」？How do I use the Dunam to Circular mil tool?
在「杜纳姆 ↔ 圆密耳」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 Dunam to Circular mil and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 杜纳姆等于多少圆密耳？How many circular mil in 1 dunam?
1 dunam = 1.97352524139e+12 cmil（按国际定义系数）。1 dunam = 1.97352524139e+12 cmil (international definition).
如何把杜纳姆换算成圆密耳？How do I convert dunam to circular mil?
结果 = 数值 × 1.97352524139e+12。例如 1 dunam = 1.97352524139e+12 cmil。result = value × 1.97352524139e+12. Example: 1 dunam = 1.97352524139e+12 cmil.
杜纳姆/圆密耳属于哪类单位？What kind of units are dunam/circular mil?
二者同属「面积」量纲，可安全互算；也可打开「area-converter」做多单位对照。Both are area units; see also the area converter hub.
换算系数准确吗？Are the conversion factors exact?
「杜纳姆 ↔ 圆密耳」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 Dunam to Circular mil uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「杜纳姆 ↔ 圆密耳」免费吗？需要注册吗？Is the Dunam to Circular mil free? Do I need an account?
「杜纳姆 ↔ 圆密耳」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 Dunam to Circular mil is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.