Power and Energy
kWhtoGJ
Convert kilowatt-hours (kWh) to gigajoules (GJ).
Factor1 kWh = 0.0036 GJ
Converter
kWh
Accepts numbers or expressions, e.g. 150 + 14.7
Result
GJ
Rendered to 6 significant figures.
Formula
Formula
GJ = kWh × 0.0036
Multiply any value in kilowatt-hours by 0.0036 to obtain the value in gigajoules.
Worked example
Convert 1000 kWh to GJ.
- 01Start with 1000 kWh.
- 02Multiply by the conversion factor: 1000 × 0.0036 = 3.6 GJ.
Result1000 kWh = 3.6 GJ
Conversion table
| kWh | GJ |
|---|---|
| 1 | 0.0036 |
| 2 | 0.0072 |
| 5 | 0.018 |
| 10 | 0.036 |
| 20 | 0.072 |
| 50 | 0.18 |
| 100 | 0.36 |
| 200 | 0.72 |
| 500 | 1.8 |
| 1000 | 3.6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from kWh to GJ?
1 kWh equals 0.0036 GJ. To convert, multiply the value in kilowatt-hours by 0.0036.
How do I convert 1 kWh to GJ?
1 kWh = 0.0036 GJ. For any value, multiply by 0.0036.
How do I convert GJ back to kWh?
Divide by the same factor — or equivalently, multiply by 277.7778. So 1 GJ = 277.778 kWh.
When would I need to convert kilowatt-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).