📐 角秒 ↔ 弧度Arcsecond to Radian
角秒与弧度互算（1 ″ = 4.8481368111e-06 rad）。本地换算，附常用相关单位。Convert arcsecond and radian (1 ″ = 4.8481368111e-06 rad). 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
「角秒 ↔ 弧度」是什么？What is the Arcsecond to Radian tool?
角秒与弧度互算（1 ″ = 4.8481368111e-06 rad）。本地换算，附常用相关单位。Convert arcsecond and radian (1 ″ = 4.8481368111e-06 rad). Runs locally with related units.
如何使用「角秒 ↔ 弧度」？How do I use the Arcsecond to Radian tool?
在「角秒 ↔ 弧度」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 Arcsecond to Radian and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 角秒等于多少弧度？How many radian in 1 arcsecond?
1 ″ = 4.8481368111e-06 rad（按国际定义系数）。1 ″ = 4.8481368111e-06 rad (international definition).
如何把角秒换算成弧度？How do I convert arcsecond to radian?
结果 = 数值 × 4.8481368111e-06。例如 206264.806247 ″ = 1 rad。result = value × 4.8481368111e-06. Example: 206264.806247 ″ = 1 rad.
角秒/弧度属于哪类单位？What kind of units are arcsecond/radian?
二者同属「角度」量纲，可安全互算；也可打开「angle-converter」做多单位对照。Both are angle units; see also the angle converter hub.
换算系数准确吗？Are the conversion factors exact?
「角秒 ↔ 弧度」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 Arcsecond to Radian uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「角秒 ↔ 弧度」免费吗？需要注册吗？Is the Arcsecond to Radian free? Do I need an account?
「角秒 ↔ 弧度」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 Arcsecond to Radian is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.