⚡ 瓦·年 ↔ 尧焦Watt-year (365 d) to Yottajoule
瓦·年与尧焦互算（1 W·yr = 3.1536e-17 YJ）。本地换算，附常用相关单位。Convert watt-year (365 d) and yottajoule (1 W·yr = 3.1536e-17 YJ). 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
「瓦·年 ↔ 尧焦」是什么？What is the Watt-year (365 d) to Yottajoule tool?
瓦·年与尧焦互算（1 W·yr = 3.1536e-17 YJ）。本地换算，附常用相关单位。Convert watt-year (365 d) and yottajoule (1 W·yr = 3.1536e-17 YJ). Runs locally with related units.
如何使用「瓦·年 ↔ 尧焦」？How do I use the Watt-year (365 d) to Yottajoule tool?
在「瓦·年 ↔ 尧焦」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 Watt-year (365 d) to Yottajoule and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 瓦·年等于多少尧焦？How many yottajoule in 1 watt-year (365 d)?
1 W·yr = 3.1536e-17 YJ（按国际定义系数）。1 W·yr = 3.1536e-17 YJ (international definition).
如何把瓦·年换算成尧焦？How do I convert watt-year (365 d) to yottajoule?
结果 = 数值 × 3.1536e-17。例如 3.170979198e+16 W·yr = 0.9999999999 YJ。result = value × 3.1536e-17. Example: 3.170979198e+16 W·yr = 0.9999999999 YJ.
瓦·年/尧焦属于哪类单位？What kind of units are watt-year (365 d)/yottajoule?
二者同属「能量」量纲，可安全互算；也可打开「energy-converter」做多单位对照。Both are energy units; see also the energy converter hub.
换算系数准确吗？Are the conversion factors exact?
「瓦·年 ↔ 尧焦」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 Watt-year (365 d) to Yottajoule uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「瓦·年 ↔ 尧焦」免费吗？需要注册吗？Is the Watt-year (365 d) to Yottajoule free? Do I need an account?
「瓦·年 ↔ 尧焦」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 Watt-year (365 d) to Yottajoule is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.