A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix.
Microjoules to Kilowatt hours
Convert Microjoule (uJ) to Kilowatt-hour (kWh) instantly with an exact formula, conversion table, and FAQ.
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Convert microjoules (uJ) 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 = uJ × 2.777777778e-13
Results update instantly for Microjoules to Kilowatt hours conversions.
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Formula
kWh = uJ × 2.777777778e-13
uJ = kWh × 3600000000000
Conversion table
| 1 uJ | 2.777778e-13 kWh |
| 5 uJ | 1.388889e-12 kWh |
| 10 uJ | 2.777778e-12 kWh |
| 20 uJ | 5.555556e-12 kWh |
| 50 uJ | 1.388889e-11 kWh |
| 100 uJ | 2.777778e-11 kWh |
| 500 uJ | 1.388889e-10 kWh |
| 1000 uJ | 2.777778e-10 kWh |
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How the formula works
Both microjoule and kilowatt-hour measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in microjoules by 2.777777778e-13 to get kilowatt hours. To reverse the conversion, multiply a kilowatt-hour value by 3600000000000 to get back to microjoules.
Frequently asked questions
What is Microjoule (uJ)?
A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro 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 microjoules to kilowatt hours?
Multiply the microjoule value by 2.777777778e-13 to get the equivalent in kilowatt hours. For example, 5 uJ × 2.777777778e-13 = 1.388889e-12 kWh.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 2.777777778e-13 is an exact, non-rounded value.
Can I convert kilowatt hours back to microjoules?
Yes. Divide the kilowatt-hour value by 2.777777778e-13, or multiply it by 3600000000000, to get microjoules.
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About converting microjoules to kilowatt hours
A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro 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 microjoules 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.