⌛ 恒星年 ↔ 回归年Sidereal year to Tropical year
恒星年与回归年互算（1 yr sid = 1.000038804 yr trop）。本地换算，附常用相关单位。Convert sidereal year and tropical year (1 yr sid = 1.000038804 yr trop). 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
「恒星年 ↔ 回归年」是什么？What is the Sidereal year to Tropical year tool?
恒星年与回归年互算（1 yr sid = 1.000038804 yr trop）。本地换算，附常用相关单位。Convert sidereal year and tropical year (1 yr sid = 1.000038804 yr trop). Runs locally with related units.
如何使用「恒星年 ↔ 回归年」？How do I use the Sidereal year to Tropical year tool?
在「恒星年 ↔ 回归年」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 Sidereal year to Tropical year and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 恒星年等于多少回归年？How many tropical year in 1 sidereal year?
1 yr sid = 1.000038804 yr trop（按国际定义系数）。1 yr sid = 1.000038804 yr trop (international definition).
如何把恒星年换算成回归年？How do I convert sidereal year to tropical year?
结果 = 数值 × 1.000038804。例如 1 yr sid = 1.000038804 yr trop。result = value × 1.000038804. Example: 1 yr sid = 1.000038804 yr trop.
恒星年/回归年属于哪类单位？What kind of units are sidereal year/tropical year?
二者同属「时间」量纲，可安全互算；也可打开「time-unit-converter」做多单位对照。Both are time units; see also the time unit converter hub.
换算系数准确吗？Are the conversion factors exact?
「恒星年 ↔ 回归年」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 Sidereal year to Tropical year uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「恒星年 ↔ 回归年」免费吗？需要注册吗？Is the Sidereal year to Tropical year free? Do I need an account?
「恒星年 ↔ 回归年」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 Sidereal year to Tropical year is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.