⚖️ 打兰 ↔ 毫克Dram (avoirdupois) to Milligram
打兰与毫克互算（1 dr = 1771.84519531 mg）。本地换算，附常用相关单位。Convert dram (avoirdupois) and milligram (1 dr = 1771.84519531 mg). 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
「打兰 ↔ 毫克」是什么？What is the Dram (avoirdupois) to Milligram tool?
打兰与毫克互算（1 dr = 1771.84519531 mg）。本地换算，附常用相关单位。Convert dram (avoirdupois) and milligram (1 dr = 1771.84519531 mg). Runs locally with related units.
如何使用「打兰 ↔ 毫克」？How do I use the Dram (avoirdupois) to Milligram tool?
在「打兰 ↔ 毫克」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 Dram (avoirdupois) to Milligram and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 打兰等于多少毫克？How many milligram in 1 dram (avoirdupois)?
1 dr = 1771.84519531 mg（按国际定义系数）。1 dr = 1771.84519531 mg (international definition).
如何把打兰换算成毫克？How do I convert dram (avoirdupois) to milligram?
结果 = 数值 × 1771.84519531。例如 1 dr = 1771.84519531 mg。result = value × 1771.84519531. Example: 1 dr = 1771.84519531 mg.
打兰/毫克属于哪类单位？What kind of units are dram (avoirdupois)/milligram?
二者同属「质量」量纲，可安全互算；也可打开「weight-converter」做多单位对照。Both are mass units; see also the weight converter hub.
换算系数准确吗？Are the conversion factors exact?
「打兰 ↔ 毫克」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 Dram (avoirdupois) to Milligram uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「打兰 ↔ 毫克」免费吗？需要注册吗？Is the Dram (avoirdupois) to Milligram free? Do I need an account?
「打兰 ↔ 毫克」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 Dram (avoirdupois) to Milligram is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.