An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Ergs to Kilojoules
Convert Erg (erg) to Kilojoule (kJ) instantly with an exact formula, conversion table, and FAQ.
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Convert ergs (erg) to kilojoules (kJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
kJ = erg × 1.000000000e-10
Results update instantly for Ergs to Kilojoules conversions.
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Formula
kJ = erg × 1.000000000e-10
erg = kJ × 10000000000
Conversion table
| 1 erg | 1.000000e-10 kJ |
| 5 erg | 5.000000e-10 kJ |
| 10 erg | 1.000000e-09 kJ |
| 20 erg | 2.000000e-09 kJ |
| 50 erg | 5.000000e-09 kJ |
| 100 erg | 1.000000e-08 kJ |
| 500 erg | 5.000000e-08 kJ |
| 1000 erg | 1.000000e-07 kJ |
Related conversions
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How the formula works
Both erg and kilojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in ergs by 1.000000000e-10 to get kilojoules. To reverse the conversion, multiply a kilojoule value by 10000000000 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 Kilojoule (kJ)?
A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
How do I convert ergs to kilojoules?
Multiply the erg value by 1.000000000e-10 to get the equivalent in kilojoules. For example, 5 erg × 1.000000000e-10 = 5.000000e-10 kJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-10 is an exact, non-rounded value.
Can I convert kilojoules back to ergs?
Yes. Divide the kilojoule value by 1.000000000e-10, or multiply it by 10000000000, to get ergs.
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About converting ergs to kilojoules
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule. A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
Use this calculator to move between ergs and kilojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.