Convert kilowatt hour to joule
Here you can quickly calculate how many joule fit in one kilowatt hour.
Choose unit - From
Only numbers and one decimal comma.
write a number and we convert instantly
- scroll: formula · table · questions -
- 1 kWh = 3600000 J
- 1 J = 0 kWh
Conversion from kilowatt hour to joule example
- 1 kilowatt hour = 3600000 joule
Kilowatt hour to joule conversion table
| kilowatt hour | joule |
|---|---|
| 1 | 3600000 |
| 2 | 7200000 |
| 5 | 18000000 |
| 10 | 36000000 |
| 20 | 72000000 |
| 50 | 180000000 |
| 100 | 360000000 |
Formula to convert kilowatt hour to joule
To convert kilowatt hour to joule, multiply by 3600000.
1 kWh = 3600000 J
Example: 1 kilowatt hour = 3600000 joule
Common mistakes
-
Kilowatts (kW) and kilowatt-hours (kWh) are constantly confused: kW is power, how fast energy is being used right now, while kWh is an amount of energy, power times time. A 2 kW heater running for 3 hours uses 2 × 3 = 6 kWh. Your electricity bill counts kWh; your main fuse limits kW.
-
The relationship is exact: 1 kWh = 3.6 MJ (3,600 kJ, because an hour has 3,600 seconds). The common slip is dividing when you should multiply: 10 kWh is 36 MJ, not 2.8. Remember the direction: kWh → MJ means times 3.6.
Quick kilowatt hour to/from joule conversion quiz
Score:
0
10 kilowatt hour equals 3.6e+7 joule.
Correct answer: 10 kilowatt hour = 3.6e+7 joule.
5 kilowatt hour equals 1.8e+7 joule.
Correct answer: 5 kilowatt hour = 1.8e+7 joule.
20 joule equals 5.56e-7 kilowatt hour.
Correct answer: 20 joule = 5.56e-6 kilowatt hour.