Table Of Contents
Joules to kilowatt-hours Conversion
1 joules (joule) is equal to 0.0000002777777778 kilowatt-hours (kWh).
1 joule = 0.0000002777777778 kWh
or
1 kWh = 3600000 joule
Formula
To convert a energy from joules (joule) to kilowatt-hours (kWh), divide the energy in joules by 3600000
e(kWh) = e(joule) / 3600000
Examples:
Convert 1000 joules to kilowatt-hours:
e(kWh) = 1000joule / 3600000 = 0.0002777777778 kWh
Conversion table
| Joules (joule) | Kilowatt-hours (kWh) |
|---|---|
| 1 joule | 2.77778e-7 kWh |
| 2 joule | 5.55556e-7 kWh |
| 3 joule | 8.33333e-7 kWh |
| 5 joule | 1.388889e-6 kWh |
| 10 joule | 2.777778e-6 kWh |
| 20 joule | 5.555556e-6 kWh |
| 25 joule | 6.944444e-6 kWh |
| 50 joule | 1.388889e-5 kWh |
| 100 joule | 2.777778e-5 kWh |
| 250 joule | 6.944444e-5 kWh |
| 500 joule | 1.38889e-4 kWh |
| 1000 joule | 2.77778e-4 kWh |
| Kilowatt-hours (kWh) | Joules (joule) |
|---|---|
| 1 kWh | 3600000 joule |
| 2 kWh | 7200000 joule |
| 3 kWh | 10800000 joule |
| 5 kWh | 18000000 joule |
| 10 kWh | 36000000 joule |
| 20 kWh | 72000000 joule |
| 25 kWh | 90000000 joule |
| 50 kWh | 180000000 joule |
| 100 kWh | 360000000 joule |
| 250 kWh | 900000000 joule |
| 500 kWh | 1.8e9 joule |
| 1000 kWh | 3.6e9 joule |
Frequently asked questions
How do I convert joules to kilowatt-hours?
Divide the value in joules by 3600000 to get the result in kilowatt-hours. For example, 5 joule ÷ 3600000 = 1.388889e-6 kWh.
How many kilowatt-hours are in 1 joules?
1 joules (joule) is equal to 2.77778e-7 kilowatt-hours (kWh).
How do I convert kilowatt-hours back to joules?
Use the inverse operation: multiply the value in kilowatt-hours by 3600000 to get the result in joules.
How accurate is the joules to kilowatt-hours conversion?
The converter multiplies by the conversion factor 3600000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- NIST Guide to the SI (SP 811), Footnotes (notes 22 and 23)
- CODATA Value: electron volt-joule relationship (NIST Fundamental Physical Constants)