A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix.
Exajoules to Kilowatt hours
Convert Exajoule (EJ) to Kilowatt-hour (kWh) instantly with an exact formula, conversion table, and FAQ.
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Convert exajoules (EJ) to kilowatt hours (kWh) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A kilowatt-hour (kWh) is the standard billing unit for electricity, equal to 1,000 watts sustained for one hour.
kWh = EJ × 277777777778
Results update instantly for Exajoules to Kilowatt hours conversions.
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Formula
kWh = EJ × 277777777778
EJ = kWh × 3.600000000e-12
Conversion table
| 1 EJ | 2.777778e+11 kWh |
| 5 EJ | 1.388889e+12 kWh |
| 10 EJ | 2.777778e+12 kWh |
| 20 EJ | 5.555556e+12 kWh |
| 50 EJ | 1.388889e+13 kWh |
| 100 EJ | 2.777778e+13 kWh |
| 500 EJ | 1.388889e+14 kWh |
| 1000 EJ | 2.777778e+14 kWh |
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How the formula works
Both exajoule and kilowatt-hour measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in exajoules by 277777777778 to get kilowatt hours. To reverse the conversion, multiply a kilowatt-hour value by 3.600000000e-12 to get back to exajoules.
Frequently asked questions
What is Exajoule (EJ)?
A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix.
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.
How do I convert exajoules to kilowatt hours?
Multiply the exajoule value by 277777777778 to get the equivalent in kilowatt hours. For example, 5 EJ × 277777777778 = 1.388889e+12 kWh.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 277777777778 is an exact, non-rounded value.
Can I convert kilowatt hours back to exajoules?
Yes. Divide the kilowatt-hour value by 277777777778, or multiply it by 3.600000000e-12, to get exajoules.
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About converting exajoules to kilowatt hours
A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix. A kilowatt-hour (kWh) is the standard billing unit for electricity, equal to 1,000 watts sustained for one hour.
Use this calculator to move between exajoules and kilowatt hours accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.