⚖️ 毫克 ↔ 公吨Milligram to Tonne
毫克与公吨互算（1 mg = 1e-09 t）。本地换算，附常用相关单位。Convert milligram and tonne (1 mg = 1e-09 t). 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
「毫克 ↔ 公吨」是什么？What is the Milligram to Tonne tool?
毫克与公吨互算（1 mg = 1e-09 t）。本地换算，附常用相关单位。Convert milligram and tonne (1 mg = 1e-09 t). Runs locally with related units.
如何使用「毫克 ↔ 公吨」？How do I use the Milligram to Tonne tool?
在「毫克 ↔ 公吨」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 Milligram to Tonne and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 毫克等于多少公吨？How many tonne in 1 milligram?
1 mg = 1e-09 t（按国际定义系数）。1 mg = 1e-09 t (international definition).
如何把毫克换算成公吨？How do I convert milligram to tonne?
结果 = 数值 × 1e-09。例如 1000000000 mg = 1 t。result = value × 1e-09. Example: 1000000000 mg = 1 t.
毫克/公吨属于哪类单位？What kind of units are milligram/tonne?
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?
「毫克 ↔ 公吨」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 Milligram to Tonne uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「毫克 ↔ 公吨」免费吗？需要注册吗？Is the Milligram to Tonne free? Do I need an account?
「毫克 ↔ 公吨」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 Milligram to Tonne is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.