Power and Energy
MWhtoGJ
Convert megawatt-hours (MWh) to gigajoules (GJ).
Factor1 MWh = 3.6 GJ
Converter
MWh
Accepts numbers or expressions, e.g. 150 + 14.7
Result
GJ
Rendered to 6 significant figures.
Formula
Formula
GJ = MWh × 3.6
Multiply any value in megawatt-hours by 3.6 to obtain the value in gigajoules.
Worked example
Convert 1 MWh to GJ.
- 01Start with 1 MWh.
- 02Multiply by the conversion factor: 1 × 3.6 = 3.6 GJ.
Result1 MWh = 3.6 GJ
Conversion table
| MWh | GJ |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 5 | 18 |
| 10 | 36 |
| 20 | 72 |
| 50 | 180 |
| 100 | 360 |
| 200 | 720 |
| 500 | 1800 |
| 1000 | 3600 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from MWh to GJ?
1 MWh equals 3.6 GJ. To convert, multiply the value in megawatt-hours by 3.6.
How do I convert 1 MWh to GJ?
1 MWh = 3.6 GJ. For any value, multiply by 3.6.
How do I convert GJ back to MWh?
Divide by the same factor — or equivalently, multiply by 0.2777778. So 1 GJ = 0.277778 MWh.
When would I need to convert megawatt-hour to gigajoule?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).