Convert Megajoule to Kilowatt-hour
Enter the number of megajoules that you want to convert to kilowatt-hours.
How to Convert Megajoules to Kilowatt-hours
The megajoule and kilowatt-hour are both units of energy. 1 kilowatt-hour equals 3.6 megajoules. This means to convert megajoules to kilowatt-hours, you divide by 3.6.
Formula
Step-by-Step Example
Convert 5 MJ to kilowatt-hours:
We need to convert megajoules to kilowatt-hours
Since 1 kWh = 3.6 MJ, divide by 3.6
5 ÷ 3.6 = 1.3888888889
5 MJ = 1.3888888889 kWh
Megajoule to Kilowatt-hour Conversion Table
Quick reference table for common megajoule to kilowatt-hour conversions. Click any value for detailed calculation.
| Megajoules (MJ) | Kilowatt-hours (kWh) |
|---|---|
| 1 MJ | 0.2777777778 kWh |
| 2 MJ | 0.5555555556 kWh |
| 5 MJ | 1.3888888889 kWh |
| 10 MJ | 2.7777777778 kWh |
| 15 MJ | 4.1666666667 kWh |
| 20 MJ | 5.5555555556 kWh |
| 25 MJ | 6.9444444444 kWh |
| 50 MJ | 13.888888889 kWh |
| 100 MJ | 27.777777778 kWh |
About These Units
Megajoule (MJ)
A megajoule (MJ) equals 1,000,000 joules or approximately 0.278 kilowatt-hours. Megajoules measure fuel energy content (gasoline: ~34 MJ/liter), industrial processes, and large-scale energy consumption. One MJ equals about 239 kilocalories.
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 megajoules to kilowatt-hours?
To convert megajoules to kilowatt-hours, divide the value by 3.6. For example, 10 MJ = 2.7777777778 kWh.
How many kilowatt-hours are in 1 megajoule?
1 megajoule equals 0.2777777778 kilowatt-hours.
What is the formula for megajoules to kilowatt-hours?
The formula is: kWh = MJ ÷ 3.6.