Convert joules to kilowatt hours
1 J = 2.7778 × 10^-7 kWh. Change the amount below, or read the formula and the reference table further down.
1 joule equals
kilowatt hours
1 J = 2.7778 × 10^-7 kWh
The formula
Joules and kilowatt hours both measure energy from the same zero, so a single multiplier does the job.
kWh = J × 2.7778 × 10^-7
Going the other way? Convert kilowatt hours to joules.
Joules to kilowatt hours table
Common values, rounded for reading.
| Joules (J) | Kilowatt hours (kWh) |
|---|---|
| 1 | 2.7778 × 10^-7 |
| 2 | 5.5556 × 10^-7 |
| 3 | 8.3333 × 10^-7 |
| 4 | 0.000001 |
| 5 | 0.000001 |
| 6 | 0.000002 |
| 7 | 0.000002 |
| 8 | 0.000002 |
| 9 | 0.000003 |
| 10 | 0.000003 |
| 15 | 0.000004 |
| 20 | 0.000006 |
| 25 | 0.000007 |
| 30 | 0.000008 |
| 40 | 0.000011 |
| 50 | 0.000014 |
| 75 | 0.000021 |
| 100 | 0.000028 |
| 250 | 0.000069 |
| 500 | 0.000139 |
| 1,000 | 0.000278 |
Questions people ask
- How many kilowatt hours are in a joule?
- One joule equals 2.7778 × 10^-7 kilowatt hours.
- How do I convert joules to kilowatt hours by hand?
- Multiply the number of joules by 2.7778 × 10^-7. For a rough check, 2.7778 × 10^-7 is close enough for most everyday use.
- What is 1 joule in kilowatt hours?
- 1 joule is 2.7778 × 10^-7 kilowatt hours.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.