Megajoules to Watt-hours Converter
Convert megajoules (MJ) to watt-hours (Wh)
Result
277.7777778 Wh
Watt-hours
1 MJ = 277.7777778 Wh
1 MJ in other units
- 1Enter a valueType the number to convert
- 2Pick the unitsChoose what to convert from and to
- 3Read the resultSee it in every other unit too
How to convert megajoules to watt-hours
One megajoule equals 277.7778 watt-hours, so multiply the number of megajoules by 277.7778.
Wh = MJ × 277.7778
1 MJ = 277.7778 Wh · 1 Wh = 0.0036 MJ
Worked example
To convert 5 megajoules to watt-hours: 5 MJ × 277.7778 = 1,388.889 Wh.
About megajoules (MJ)
A megajoule is 1,000,000 J, used for fuel energy content.
About watt-hours (Wh)
A watt-hour is the energy of one watt for one hour (3,600 J), used for battery capacity.
More conversions
Megajoules to other units
Frequently asked questions
How many watt-hours are in one megajoule?
One megajoule equals 277.7778 watt-hours.
How many megajoules are in one watt-hour?
One watt-hour equals 0.0036 megajoules.
How do I convert megajoules to watt-hours?
Use the formula Wh = MJ × 277.7778. For example, 5 MJ × 277.7778 = 1,388.889 Wh.