Joules to Kilowatt-hours (J to kWh)
Free online joule to kilowatt-hour converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
ENERGY CONVERTER — INSTANT RESULT
Formula: multiply the joule value by 2.7777778e-07 — i.e. kWh = J × 2.7777778e-07
Quick check: 1 J = 2.7777778e-07 kWh
Quick check: 1 J = 2.7777778e-07 kWh
Joules to Kilowatt-hours conversion table
| Joules (J) | Kilowatt-hours (kWh) |
|---|---|
| 1 J | 2.7777778e-07 kWh |
| 2 J | 5.5555556e-07 kWh |
| 3 J | 8.3333333e-07 kWh |
| 4 J | 1.1111111e-06 kWh |
| 5 J | 1.3888889e-06 kWh |
| 6 J | 1.6666667e-06 kWh |
| 7 J | 1.9444444e-06 kWh |
| 8 J | 2.2222222e-06 kWh |
| 9 J | 2.5e-06 kWh |
| 10 J | 2.7777778e-06 kWh |
| 15 J | 4.1666667e-06 kWh |
| 20 J | 5.5555556e-06 kWh |
| 25 J | 6.9444444e-06 kWh |
| 30 J | 8.3333333e-06 kWh |
| 40 J | 1.1111111e-05 kWh |
| 50 J | 1.3888889e-05 kWh |
| 75 J | 2.0833333e-05 kWh |
| 100 J | 2.7777778e-05 kWh |
| 250 J | 6.9444444e-05 kWh |
| 500 J | 0.00013888889 kWh |
| 1,000 J | 0.00027777778 kWh |
How to convert joules to kilowatt-hours
To convert joules to kilowatt-hours, multiply the amount in joules by 2.7777778e-07. For example, 10 J = 2.7777778e-06 kWh. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between joules, calories, BTU, kilowatt-hours and foot-pounds. The joule is the SI unit of energy; the thermochemical calorie is defined as exactly 4.184 J.
Frequently asked questions
How many kilowatt-hours are in one joule?
One joule is exactly 2.7777778e-07 kilowatt-hours.
How do I convert J to kWh?
Multiply the J value by 2.7777778e-07 to get kWh. The converter at the top of this page does this automatically and works in both directions.
How much is 100 joules in kilowatt-hours?
100 joules equals 2.7777778e-05 kilowatt-hours.