An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Ergs to Quectojoules
Convert Erg (erg) to Quectojoule (qJ) instantly with an exact formula, conversion table, and FAQ.
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Convert ergs (erg) to quectojoules (qJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A quectojoule (qJ) is a metric-prefixed unit of energy equal to 10-30 joules, a fraction of a single joule, using the SI quecto prefix.
qJ = erg × 1.000000000e+23
Results update instantly for Ergs to Quectojoules conversions.
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Formula
qJ = erg × 1.000000000e+23
erg = qJ × 1.000000000e-23
Conversion table
| 1 erg | 1.000000e+23 qJ |
| 5 erg | 5.000000e+23 qJ |
| 10 erg | 1.000000e+24 qJ |
| 20 erg | 2.000000e+24 qJ |
| 50 erg | 5.000000e+24 qJ |
| 100 erg | 1.000000e+25 qJ |
| 500 erg | 5.000000e+25 qJ |
| 1000 erg | 1.000000e+26 qJ |
Related conversions
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How the formula works
Both erg and quectojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in ergs by 1.000000000e+23 to get quectojoules. To reverse the conversion, multiply a quectojoule value by 1.000000000e-23 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 Quectojoule (qJ)?
A quectojoule (qJ) is a metric-prefixed unit of energy equal to 10-30 joules, a fraction of a single joule, using the SI quecto prefix.
How do I convert ergs to quectojoules?
Multiply the erg value by 1.000000000e+23 to get the equivalent in quectojoules. For example, 5 erg × 1.000000000e+23 = 5.000000e+23 qJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e+23 is an exact, non-rounded value.
Can I convert quectojoules back to ergs?
Yes. Divide the quectojoule value by 1.000000000e+23, or multiply it by 1.000000000e-23, to get ergs.
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About converting ergs to quectojoules
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule. A quectojoule (qJ) is a metric-prefixed unit of energy equal to 10-30 joules, a fraction of a single joule, using the SI quecto prefix.
Use this calculator to move between ergs and quectojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.