An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Ergs to Exajoules
Convert Erg (erg) to Exajoule (EJ) instantly with an exact formula, conversion table, and FAQ.
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Convert ergs (erg) to exajoules (EJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix.
EJ = erg × 1.000000000e-25
Results update instantly for Ergs to Exajoules conversions.
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Formula
EJ = erg × 1.000000000e-25
erg = EJ × 1.000000000e+25
Conversion table
| 1 erg | 1.000000e-25 EJ |
| 5 erg | 5.000000e-25 EJ |
| 10 erg | 1.000000e-24 EJ |
| 20 erg | 2.000000e-24 EJ |
| 50 erg | 5.000000e-24 EJ |
| 100 erg | 1.000000e-23 EJ |
| 500 erg | 5.000000e-23 EJ |
| 1000 erg | 1.000000e-22 EJ |
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How the formula works
Both erg and exajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in ergs by 1.000000000e-25 to get exajoules. To reverse the conversion, multiply a exajoule value by 1.000000000e+25 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 Exajoule (EJ)?
A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix.
How do I convert ergs to exajoules?
Multiply the erg value by 1.000000000e-25 to get the equivalent in exajoules. For example, 5 erg × 1.000000000e-25 = 5.000000e-25 EJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-25 is an exact, non-rounded value.
Can I convert exajoules back to ergs?
Yes. Divide the exajoule value by 1.000000000e-25, or multiply it by 1.000000000e+25, to get ergs.
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About converting ergs to exajoules
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule. A exajoule (EJ) is a metric-prefixed unit of energy equal to 1018 joules, using the SI exa prefix.
Use this calculator to move between ergs and exajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.