Energy
Megajoule to Watt-hours
Convert megajoule to watt-hours instantly.
About this conversion
Megajoule (MJ) = 1.000.000 J. Bruges til energiforbrug i industri, naturgasrørledninger og ingeniørfag. 1 MJ svarer til ca. 0,278 kWh, og en liter benzin indeholder ca. 32 MJ. Watt-hours (Wh) are used for battery capacity and electricity consumption reports. 1 Megajoule equals 277.78 watt-hours. The converter above calculates the result instantly — you can also swap the units to convert in the other direction.
How to use
Enter a value in the megajoule field and instantly see the result in watt-hours. Click the swap button to reverse the conversion.
Manual calculation
1 megajoule = 277.78 watt-hours. Example: 10 MJ = 2,777.8 Wh.
Frequently asked questions
How do you convert megajoule to watt-hours?
Multiply the number of megajoule by 277.78 to get watt-hours. Example: 10 MJ × 277.78 = 2,777.8 Wh.
Are megajoule bigger or smaller than watt-hours?
Megajoule is larger than Watt-hours. One megajoule equals 277.78 watt-hours, so the result is a larger number when converting from megajoule to watt-hours.
What is 5 megajoule in watt-hours?
5 MJ equals 1,388.9 Wh.
How many megajoule are in 1 watt-hour?
1 Wh equals 0.0036 MJ. This is the reverse conversion — useful if you have a value in watt-hours and want it in megajoule.
What is megajoule?
Megajoule (MJ) = 1.000.000 J. Bruges til energiforbrug i industri, naturgasrørledninger og ingeniørfag. 1 MJ svarer til ca. 0,278 kWh, og en liter benzin indeholder ca. 32 MJ.
What is watt-hour used for?
Watt-hours (Wh) are used for battery capacity and electricity consumption reports.