An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Ergs to Yoctojoules
Convert Erg (erg) to Yoctojoule (yJ) instantly with an exact formula, conversion table, and FAQ.
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Convert ergs (erg) to yoctojoules (yJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A yoctojoule (yJ) is a metric-prefixed unit of energy equal to 10-24 joules, a fraction of a single joule, using the SI yocto prefix.
yJ = erg × 1.000000000e+17
Results update instantly for Ergs to Yoctojoules conversions.
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Formula
yJ = erg × 1.000000000e+17
erg = yJ × 1.000000000e-17
Conversion table
| 1 erg | 1.000000e+17 yJ |
| 5 erg | 5.000000e+17 yJ |
| 10 erg | 1.000000e+18 yJ |
| 20 erg | 2.000000e+18 yJ |
| 50 erg | 5.000000e+18 yJ |
| 100 erg | 1.000000e+19 yJ |
| 500 erg | 5.000000e+19 yJ |
| 1000 erg | 1.000000e+20 yJ |
Related conversions
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How the formula works
Both erg and yoctojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in ergs by 1.000000000e+17 to get yoctojoules. To reverse the conversion, multiply a yoctojoule value by 1.000000000e-17 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 Yoctojoule (yJ)?
A yoctojoule (yJ) is a metric-prefixed unit of energy equal to 10-24 joules, a fraction of a single joule, using the SI yocto prefix.
How do I convert ergs to yoctojoules?
Multiply the erg value by 1.000000000e+17 to get the equivalent in yoctojoules. For example, 5 erg × 1.000000000e+17 = 5.000000e+17 yJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e+17 is an exact, non-rounded value.
Can I convert yoctojoules back to ergs?
Yes. Divide the yoctojoule value by 1.000000000e+17, or multiply it by 1.000000000e-17, to get ergs.
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About converting ergs to yoctojoules
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule. A yoctojoule (yJ) is a metric-prefixed unit of energy equal to 10-24 joules, a fraction of a single joule, using the SI yocto prefix.
Use this calculator to move between ergs and yoctojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.