Convert Megajoule to Megawatt-hour
Input the number of megajoules you want to convert to megawatt-hours.
How to Convert Megajoules to Megawatt-hours
The megajoule and megawatt-hour are both units of energy. By definition, 1 megawatt-hour equals exactly 3600 megajoules. This means to convert megajoules to megawatt-hours, you divide by 3600.
Formula
Step-by-Step Example
Convert 5 MJ to megawatt-hours:
We need to convert megajoules to megawatt-hours
Since 1 MWh = 3600 MJ, divide by 3600
5 ÷ 3600 = 0.0013888889
5 MJ = 0.0013888889 MWh
Megajoule to Megawatt-hour Conversion Table
Quick reference table for common megajoule to megawatt-hour conversions. Click any value for detailed calculation.
| Megajoules (MJ) | Megawatt-hours (MWh) |
|---|---|
| 0.1 MJ | 2.7777777778e-5 MWh |
| 0.5 MJ | 0.0001388889 MWh |
| 1 MJ | 0.0002777778 MWh |
| 2 MJ | 0.0005555556 MWh |
| 5 MJ | 0.0013888889 MWh |
| 10 MJ | 0.0027777778 MWh |
| 25 MJ | 0.0069444444 MWh |
| 50 MJ | 0.0138888889 MWh |
| 100 MJ | 0.0277777778 MWh |
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.
Megawatt-hour (MWh)
A megawatt-hour (MWh) equals 1,000 kilowatt-hours or 3.6 gigajoules. MWh measures power plant output, large industrial energy use, and utility-scale batteries. An average US home uses about 10.5 MWh annually. Wind turbines produce 2-4 MWh per hour.
Frequently Asked Questions
How do I convert megajoules to megawatt-hours?
To convert megajoules to megawatt-hours, divide the value by 3600. For example, 10 MJ = 0.0027777778 MWh.
How many megawatt-hours are in 1 megajoule?
1 megajoule equals 0.0002777778 megawatt-hours.
What is the formula for megajoules to megawatt-hours?
The formula is: MWh = MJ ÷ 3600.