An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Ergs to Centijoules
Convert Erg (erg) to Centijoule (cJ) instantly with an exact formula, conversion table, and FAQ.
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Convert ergs (erg) 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 = erg × 0.00001
Results update instantly for Ergs to Centijoules conversions.
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Formula
cJ = erg × 0.00001
erg = cJ × 100000
Conversion table
| 1 erg | 0.000010 cJ |
| 5 erg | 0.000050 cJ |
| 10 erg | 0.000100 cJ |
| 20 erg | 0.000200 cJ |
| 50 erg | 0.000500 cJ |
| 100 erg | 0.001000 cJ |
| 500 erg | 0.005000 cJ |
| 1000 erg | 0.010000 cJ |
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How the formula works
Both erg and centijoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in ergs by 0.00001 to get centijoules. To reverse the conversion, multiply a centijoule value by 100000 to get back to ergs.
Frequently asked questions
What is Erg (erg)?
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
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 ergs to centijoules?
Multiply the erg value by 0.00001 to get the equivalent in centijoules. For example, 5 erg × 0.00001 = 0.000050 cJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.00001 is an exact, non-rounded value.
Can I convert centijoules back to ergs?
Yes. Divide the centijoule value by 0.00001, or multiply it by 100000, to get ergs.
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About converting ergs to centijoules
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule. 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 ergs 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.