⌛ 天 ↔ 周Day to Week
天与周互算（1 d = 0.142857142857 wk）。本地换算，附常用相关单位。Convert day and week (1 d = 0.142857142857 wk). 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
「天 ↔ 周」是什么？What is the Day to Week tool?
天与周互算（1 d = 0.142857142857 wk）。本地换算，附常用相关单位。Convert day and week (1 d = 0.142857142857 wk). Runs locally with related units.
如何使用「天 ↔ 周」？How do I use the Day to Week tool?
在「天 ↔ 周」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 Day to Week and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 天等于多少周？How many week in 1 day?
1 d = 0.142857142857 wk（按国际定义系数）。1 d = 0.142857142857 wk (international definition).
如何把天换算成周？How do I convert day to week?
结果 = 数值 × 0.142857142857。例如 7 d = 1 wk。result = value × 0.142857142857. Example: 7 d = 1 wk.
天/周属于哪类单位？What kind of units are day/week?
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?
「天 ↔ 周」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 Day to Week uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「天 ↔ 周」免费吗？需要注册吗？Is the Day to Week free? Do I need an account?
「天 ↔ 周」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 Day to Week is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.