Watt Hours to Megajoules Converter
EngineeringJoules, calories, kilowatt-hours and more.
How to convert Watt Hours to Megajoules
Multiply the watt hours value by 0.0036: 1 Wh = 0.0036 MJ. Going the other way, 1 MJ = 277.778 Wh, so divide by 0.0036 or use the Megajoules to Watt Hours converter.
About these units
Watt Hours (Wh)
A watt-hour is the energy of one watt sustained for one hour, exactly 3,600 joules. Phone and laptop batteries are rated in watt-hours.
Megajoules (MJ)
A megajoule is one million joules. A kilowatt-hour is 3.6 MJ, and vehicle fuels contain roughly 30 to 45 MJ per liter or kilogram.
Watt Hours to Megajoules conversion table
| Watt Hours (Wh) | Megajoules (MJ) |
|---|---|
| 1 Wh | 0.0036 MJ |
| 2 Wh | 0.0072 MJ |
| 3 Wh | 0.0108 MJ |
| 4 Wh | 0.0144 MJ |
| 5 Wh | 0.018 MJ |
| 10 Wh | 0.036 MJ |
| 20 Wh | 0.072 MJ |
| 25 Wh | 0.09 MJ |
| 50 Wh | 0.18 MJ |
| 100 Wh | 0.36 MJ |
| 500 Wh | 1.8 MJ |
| 1,000 Wh | 3.6 MJ |
More watt hours conversions
- Watt Hours to Kilowatt Hours1 Wh = 0.001 kWh
- Watt Hours to Electron Volts1 Wh = 2.2469e+22 eV
- Watt Hours to Megawatt Hours1 Wh = 1e-6 MWh
- Watt Hours to Joules1 Wh = 3,600 J
- Watt Hours to Calories1 Wh = 860.421 cal
- Watt Hours to British Thermal Units1 Wh = 3.41213 BTU
- Watt Hours to Ergs1 Wh = 3.6e+10 erg
See every unit on the Energy Converter.