📏 丈 ↔ 光时Zhang to Light-hour
丈与光时互算（1 zhang = 3.08855643702e-12 light-h）。本地换算，附常用相关单位。Convert zhang and light-hour (1 zhang = 3.08855643702e-12 light-h). 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
「丈 ↔ 光时」是什么？What is the Zhang to Light-hour tool?
丈与光时互算（1 zhang = 3.08855643702e-12 light-h）。本地换算，附常用相关单位。Convert zhang and light-hour (1 zhang = 3.08855643702e-12 light-h). Runs locally with related units.
如何使用「丈 ↔ 光时」？How do I use the Zhang to Light-hour tool?
在「丈 ↔ 光时」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 Zhang to Light-hour and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 丈等于多少光时？How many light-hour in 1 zhang?
1 zhang = 3.08855643702e-12 light-h（按国际定义系数）。1 zhang = 3.08855643702e-12 light-h (international definition).
如何把丈换算成光时？How do I convert zhang to light-hour?
结果 = 数值 × 3.08855643702e-12。例如 323775854640 zhang = 1 light-h。result = value × 3.08855643702e-12. Example: 323775854640 zhang = 1 light-h.
丈/光时属于哪类单位？What kind of units are zhang/light-hour?
二者同属「长度」量纲，可安全互算；也可打开「length-converter」做多单位对照。Both are length units; see also the length converter hub.
换算系数准确吗？Are the conversion factors exact?
「丈 ↔ 光时」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 Zhang to Light-hour uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「丈 ↔ 光时」免费吗？需要注册吗？Is the Zhang to Light-hour free? Do I need an account?
「丈 ↔ 光时」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 Zhang to Light-hour is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.