J to kWh
Convert Joule to Kilowatt-hour
Convert Joule to Kilowatt-hour instantly with the tool above. The conversion factor is 0.000000277778, meaning 1 joule equals 0.000000277778 kilowatt-hours. Type any value and the result updates immediately — no ads, no page reloads, no clutter.
Type a number above. The result updates instantly — no buttons, no reloads.
1 Joule = 0.000000277778 kilowatt-hours
1 Kilowatt-hour = 3,600,000 joules
Quick reference
Common joules converted to kilowatt-hours at a glance.
| J | kWh |
|---|---|
| 1 | 0.000000277778 |
| 2 | 0.000000555556 |
| 5 | 0.000001388889 |
| 10 | 0.000002777778 |
| 25 | 0.000006944444 |
| 50 | 0.000013888889 |
| 100 | 0.000027777778 |
| 500 | 0.000138888889 |
| 1,000 | 0.000277777778 |
How to convert joules to kilowatt-hours
To convert a value from joules to kilowatt-hours, multiply the joule value by 0.000000277778 kilowatt-hours. For example, 10 joules × that factor = 0.000002777778 kilowatt-hours.
This joule to kilowatt-hour converter runs entirely in your browser, so results appear instantly with no page reload, no advertisements and no sign-up.
Frequently asked questions
How many kilowatt-hours are in 1 joule?+
1 joule is equal to 0.000000277778 kilowatt-hours.
How do you convert joules to kilowatt-hours?+
To convert joules to kilowatt-hours, multiply the joule value by 0.000000277778. For example, 10 joules × 0.000000277778 = 0.000002777778 kilowatt-hours.
What is the formula to convert joules to kilowatt-hours?+
Joule → Kilowatt-hour: value × 0.000000277778. Equivalently, 1 joule = 0.000000277778 kilowatt-hours.
Is this Joule to Kilowatt-hour converter free to use?+
Yes. This joule to kilowatt-hour converter is completely free, works instantly in your browser, and contains no advertisements, popups or sign-up.