kWh to Joule
Convert kWh to Joule instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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Formula
J = kWh × 3600000
kWh = J × 2.77778e-07
Conversion table
| 1 kWh | 3600000 J |
| 5 kWh | 18000000 J |
| 10 kWh | 36000000 J |
| 20 kWh | 72000000 J |
| 50 kWh | 180000000 J |
| 100 kWh | 360000000 J |
| 500 kWh | 1800000000 J |
| 1000 kWh | 3600000000 J |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the kWh (kWh). A kilowatt-hour is 3.6 million joules.
What is the destination unit in this conversion?
The destination unit is the Joule (J). The joule is the SI derived unit of energy.
How do I convert kWh to Joule?
Multiply the kWh value by 3600000. For example, 10 kWh × 3600000 = 36000000 J.
Is the kWh to Joule conversion exact?
Yes. Both units belong to the same engineering measurement family (energy), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in kWh needs to be compared with, or reported in, Joule, such as in engineering, scientific, or industrial calculations.
Can I convert Joule back to kWh?
Yes. Multiply the Joule value by 2.77778e-07 to get kWh.
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About this conversion
This page converts kWh (kWh) to Joule (J) within the engineering converter.
A kilowatt-hour is 3.6 million joules. The joule is the SI derived unit of energy.
The formula is J = kWh × 3600000, based on each unit's fixed relationship to the energy base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common kWh values already converted to Joule.