⚡ 焦耳 ↔ 千瓦时Joule to Kilowatt-hour
1 kWh = 3.6e6 J。支持焦耳、千焦、千瓦时、卡路里互算。1 kWh = 3.6e6 J. Units: joule, kilojoule, kilowatt-hour, calorie.
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
「焦耳 ↔ 千瓦时」是什么？What is the Joule to Kilowatt-hour tool?
1 kWh = 3.6e6 J。支持焦耳、千焦、千瓦时、卡路里互算。1 kWh = 3.6e6 J. Units: joule, kilojoule, kilowatt-hour, calorie.
如何使用「焦耳 ↔ 千瓦时」？How do I use the Joule to Kilowatt-hour tool?
在「焦耳 ↔ 千瓦时」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 Joule to Kilowatt-hour and choose the source unit; the table shows the value in every other unit at once, ready to copy.
电费单上的单位是什么？What unit is on an electricity bill?
家用电表和电费单用千瓦时（kWh，俗称“度”）：1 kWh = 3600000 焦耳（3.6 MJ），即 1000 瓦的电器运行 1 小时消耗的能量。Household meters and bills use kilowatt-hours (kWh): 1 kWh = 3,600,000 J (3.6 MJ), the energy a 1000 W appliance uses in one hour.
1 焦耳 等于多少其他单位？How much is 1 joule in the other units?
1 焦耳 = 0.001 千焦 = 2.777777778 × 10^-7 千瓦时 = 0.2390057361 卡路里（按定义系数计算，最多保留 10 位有效数字）。本页不接受负数：输入负值会提示错误。1 joule = 0.001 kilojoule = 2.777777778 × 10^-7 kilowatt-hour = 0.2390057361 calorie (from the defined factors, up to 10 significant digits). Negative values are not accepted here and show an error.
有哪些选项可以调整？What options can I adjust?
「焦耳 ↔ 千瓦时」的设置：「数值」默认 1。每次生成结果都按当前设置处理。Settings in the Joule to Kilowatt-hour — "Value" default 1. The result always uses the current settings.
换算系数准确吗？Are the conversion factors exact?
「焦耳 ↔ 千瓦时」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 Joule to Kilowatt-hour uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「焦耳 ↔ 千瓦时」免费吗？需要注册吗？Is the Joule to Kilowatt-hour free? Do I need an account?
「焦耳 ↔ 千瓦时」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 Joule to Kilowatt-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.