A kilowatt-hour (kWh) is the standard billing unit for electricity, equal to 1,000 watts sustained for one hour.
Kilowatt hours to Exajoules
Convert Kilowatt-hour (kWh) to Exajoule (EJ) instantly with an exact formula, conversion table, and FAQ.
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Convert kilowatt hours (kWh) to exajoules (EJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix.
EJ = kWh × 3.600000000e-12
Results update instantly for Kilowatt hours to Exajoules conversions.
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Formula
EJ = kWh × 3.600000000e-12
kWh = EJ × 277777777778
Conversion table
| 1 kWh | 3.600000e-12 EJ |
| 5 kWh | 1.800000e-11 EJ |
| 10 kWh | 3.600000e-11 EJ |
| 20 kWh | 7.200000e-11 EJ |
| 50 kWh | 1.800000e-10 EJ |
| 100 kWh | 3.600000e-10 EJ |
| 500 kWh | 1.800000e-09 EJ |
| 1000 kWh | 3.600000e-09 EJ |
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How the formula works
Both kilowatt-hour and exajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in kilowatt hours by 3.600000000e-12 to get exajoules. To reverse the conversion, multiply a exajoule value by 277777777778 to get back to kilowatt hours.
Frequently asked questions
What is Kilowatt-hour (kWh)?
A kilowatt-hour (kWh) is the standard billing unit for electricity, equal to 1,000 watts sustained for one hour.
What is Exajoule (EJ)?
A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix.
How do I convert kilowatt hours to exajoules?
Multiply the kilowatt-hour value by 3.600000000e-12 to get the equivalent in exajoules. For example, 5 kWh × 3.600000000e-12 = 1.800000e-11 EJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 3.600000000e-12 is an exact, non-rounded value.
Can I convert exajoules back to kilowatt hours?
Yes. Divide the exajoule value by 3.600000000e-12, or multiply it by 277777777778, to get kilowatt hours.
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About converting kilowatt hours to exajoules
A kilowatt-hour (kWh) is the standard billing unit for electricity, equal to 1,000 watts sustained for one hour. A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix.
Use this calculator to move between kilowatt hours and exajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.