A centijoule (cJ) is a metric-prefixed unit of energy equal to 10-2 joules, a fraction of a single joule, using the SI centi prefix.
Centijoules to Kilowatt hours
Convert Centijoule (cJ) to Kilowatt-hour (kWh) instantly with an exact formula, conversion table, and FAQ.
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Convert centijoules (cJ) 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 = cJ × 2.777777778e-09
Results update instantly for Centijoules to Kilowatt hours conversions.
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Formula
kWh = cJ × 2.777777778e-09
cJ = kWh × 360000000
Conversion table
| 1 cJ | 2.777778e-09 kWh |
| 5 cJ | 1.388889e-08 kWh |
| 10 cJ | 2.777778e-08 kWh |
| 20 cJ | 5.555556e-08 kWh |
| 50 cJ | 1.388889e-07 kWh |
| 100 cJ | 2.777778e-07 kWh |
| 500 cJ | 0.000001 kWh |
| 1000 cJ | 0.000003 kWh |
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How the formula works
Both centijoule and kilowatt-hour measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in centijoules by 2.777777778e-09 to get kilowatt hours. To reverse the conversion, multiply a kilowatt-hour value by 360000000 to get back to centijoules.
Frequently asked questions
What is Centijoule (cJ)?
A centijoule (cJ) is a metric-prefixed unit of energy equal to 10-2 joules, a fraction of a single joule, using the SI centi 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 centijoules to kilowatt hours?
Multiply the centijoule value by 2.777777778e-09 to get the equivalent in kilowatt hours. For example, 5 cJ × 2.777777778e-09 = 1.388889e-08 kWh.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 2.777777778e-09 is an exact, non-rounded value.
Can I convert kilowatt hours back to centijoules?
Yes. Divide the kilowatt-hour value by 2.777777778e-09, or multiply it by 360000000, to get centijoules.
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About converting centijoules to kilowatt hours
A centijoule (cJ) is a metric-prefixed unit of energy equal to 10-2 joules, a fraction of a single joule, using the SI centi 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 centijoules 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.