Convert kJ to kWh
Enter the number of kilojoules that you want to convert to kilowatt-hours.
How to Convert Kilojoules to Kilowatt-hours
The kilojoule and kilowatt-hour are both units of energy. By definition, 1 kilowatt-hour equals exactly 3600 kilojoules. This means to convert kilojoules to kilowatt-hours, you divide by 3600.
Formula
Step-by-Step Example
Convert 5 kJ to kilowatt-hours:
We need to convert kilojoules to kilowatt-hours
Since 1 kWh = 3600 kJ, divide by 3600
5 ÷ 3600 = 0.0013888889
5 kJ = 0.0013888889 kWh
Kilojoule to Kilowatt-hour Conversion Table
Quick reference table for common kilojoule to kilowatt-hour conversions. Click any value for detailed calculation.
| Kilojoules (kJ) | Kilowatt-hours (kWh) |
|---|---|
| 0.1 kJ | 2.7777777778e-5 kWh |
| 0.5 kJ | 0.0001388889 kWh |
| 1 kJ | 0.0002777778 kWh |
| 2 kJ | 0.0005555556 kWh |
| 5 kJ | 0.0013888889 kWh |
| 10 kJ | 0.0027777778 kWh |
| 25 kJ | 0.0069444444 kWh |
| 50 kJ | 0.0138888889 kWh |
| 100 kJ | 0.0277777778 kWh |
About These Units
Kilojoule (kJ)
A kilojoule (kJ) equals 1,000 joules or approximately 239 calories. Kilojoules measure food energy on nutrition labels in Australia, Europe, and many countries. An average adult needs 8,400-10,000 kJ daily. One kJ equals approximately 0.239 kcal.
Kilowatt-hour (kWh)
A kilowatt-hour (kWh) is the standard unit for electricity billing, equal to 1,000 watt-hours or 3.6 megajoules. Average US home uses 900 kWh monthly. Running a 100W bulb for 10 hours uses 1 kWh. Electricity costs $0.10-0.30 per kWh typically.
Frequently Asked Questions
How do I convert kilojoules to kilowatt-hours?
To convert kilojoules to kilowatt-hours, divide the value by 3600. For example, 10 kJ = 0.0027777778 kWh.
How many kilowatt-hours are in 1 kilojoule?
1 kilojoule equals 0.0002777778 kilowatt-hours.
What is the formula for kilojoules to kilowatt-hours?
The formula is: kWh = kJ ÷ 3600.