Power and Energy
kWhtoJ
Convert kilowatt-hours (kWh) to joules (J).
Factor1 kWh = 3600000 J
Converter
kWh
Accepts numbers or expressions, e.g. 150 + 14.7
Result
J
Rendered to 6 significant figures.
Formula
Formula
J = kWh × 3600000
Multiply any value in kilowatt-hours by 3600000 to obtain the value in joules.
Worked example
Convert 1 kWh to J.
- 01Start with 1 kWh.
- 02Multiply by the conversion factor: 1 × 3600000 = 3.60000e+6 J.
Result1 kWh = 3.60000e+6 J
Conversion table
| kWh | J |
|---|---|
| 1 | 3.6000e+6 |
| 2 | 7.2000e+6 |
| 5 | 1.8e+7 |
| 10 | 3.6e+7 |
| 20 | 7.2e+7 |
| 50 | 1.8e+8 |
| 100 | 3.6e+8 |
| 200 | 7.2e+8 |
| 500 | 1.8e+9 |
| 1000 | 3.6e+9 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from kWh to J?
1 kWh equals 3600000 J. To convert, multiply the value in kilowatt-hours by 3600000.
How do I convert 1 kWh to J?
1 kWh = 3.60000e+6 J. For any value, multiply by 3600000.
How do I convert J back to kWh?
Divide by the same factor — or equivalently, multiply by 2.777778e-7. So 1 J = 2.77778e-7 kWh.
When would I need to convert kilowatt-hour to joule?
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).