A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix.
Millijoules to Centijoules
Convert Millijoule (mJ) to Centijoule (cJ) instantly with an exact formula, conversion table, and FAQ.
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Convert millijoules (mJ) 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 = mJ × 0.1
Results update instantly for Millijoules to Centijoules conversions.
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Formula
cJ = mJ × 0.1
mJ = cJ × 10
Conversion table
| 1 mJ | 0.100000 cJ |
| 5 mJ | 0.500000 cJ |
| 10 mJ | 1 cJ |
| 20 mJ | 2 cJ |
| 50 mJ | 5 cJ |
| 100 mJ | 10 cJ |
| 500 mJ | 50 cJ |
| 1000 mJ | 100 cJ |
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How the formula works
Both millijoule and centijoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in millijoules by 0.1 to get centijoules. To reverse the conversion, multiply a centijoule value by 10 to get back to millijoules.
Frequently asked questions
What is Millijoule (mJ)?
A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix.
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 millijoules to centijoules?
Multiply the millijoule value by 0.1 to get the equivalent in centijoules. For example, 5 mJ × 0.1 = 0.500000 cJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.1 is an exact, non-rounded value.
Can I convert centijoules back to millijoules?
Yes. Divide the centijoule value by 0.1, or multiply it by 10, to get millijoules.
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About converting millijoules to centijoules
A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix. 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 millijoules 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.