Watt-hours to Megajoules Converter
How to convert watt-hours to megajoules
megajoules = watt-hours ÷ 277.777778
To convert watt-hours to megajoules, divide the number of watt-hours by 277.777778.
1 Wh = 0.0036 MJ
Examples
- The usual airline limit for a lithium battery in carry-on baggage: 100 Wh ÷ 277.777778 = 0.36 MJ
- 1,000 Wh ÷ 277.777778 = 3.6 MJ
Watt-hours to megajoules conversion table
| Watt-hours (Wh) | Megajoules (MJ) |
|---|---|
| 1 Wh | 0.0036 MJ |
| 2 Wh | 0.0072 MJ |
| 5 Wh | 0.018 MJ |
| 10 Wh | 0.036 MJ |
| 20 Wh | 0.072 MJ |
| 50 Wh | 0.18 MJ |
| 100 Wh | 0.36 MJ |
| 200 Wh | 0.72 MJ |
| 250 Wh | 0.9 MJ |
| 500 Wh | 1.8 MJ |
| 1,000 Wh | 3.6 MJ |
| 2,000 Wh | 7.2 MJ |
| 2,500 Wh | 9 MJ |
| 5,000 Wh | 18 MJ |
| 10,000 Wh | 36 MJ |
Unit definitions
- Watt-hour (Wh)
- A watt-hour is the energy used by a 1 watt load running for one hour, exactly 3600 joules. It is used for battery capacities.
- Megajoule (MJ)
- A megajoule is 1,000,000 joules. It is used for the energy content of fuels and for gas billing in some countries.