The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
Joules to Centijoules
Convert Joule (J) to Centijoule (cJ) instantly with an exact formula, conversion table, and FAQ.
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Convert joules (J) to centijoules (cJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
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.
cJ = J × 100
Results update instantly for Joules to Centijoules conversions.
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Formula
cJ = J × 100
J = cJ × 0.01
Conversion table
| 1 J | 100 cJ |
| 5 J | 500 cJ |
| 10 J | 1000 cJ |
| 20 J | 2000 cJ |
| 50 J | 5000 cJ |
| 100 J | 10000 cJ |
| 500 J | 50000 cJ |
| 1000 J | 100000 cJ |
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How the formula works
Both joule and centijoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in joules by 100 to get centijoules. To reverse the conversion, multiply a centijoule value by 0.01 to get back to joules.
Frequently asked questions
What is Joule (J)?
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
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.
How do I convert joules to centijoules?
Multiply the joule value by 100 to get the equivalent in centijoules. For example, 5 J × 100 = 500 cJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 100 is an exact, non-rounded value.
Can I convert centijoules back to joules?
Yes. Divide the centijoule value by 100, or multiply it by 0.01, to get joules.
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About converting joules to centijoules
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter. 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.
Use this calculator to move between joules and centijoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.