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.
Yoctojoules to Ergs
Convert Yoctojoule (yJ) to Erg (erg) instantly with an exact formula, conversion table, and FAQ.
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Convert yoctojoules (yJ) to ergs (erg) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
erg = yJ × 1.000000000e-17
Results update instantly for Yoctojoules to Ergs conversions.
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Formula
erg = yJ × 1.000000000e-17
yJ = erg × 1.000000000e+17
Conversion table
| 1 yJ | 1.000000e-17 erg |
| 5 yJ | 5.000000e-17 erg |
| 10 yJ | 1.000000e-16 erg |
| 20 yJ | 2.000000e-16 erg |
| 50 yJ | 5.000000e-16 erg |
| 100 yJ | 1.000000e-15 erg |
| 500 yJ | 5.000000e-15 erg |
| 1000 yJ | 1.000000e-14 erg |
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How the formula works
Both yoctojoule and erg measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in yoctojoules by 1.000000000e-17 to get ergs. To reverse the conversion, multiply a erg value by 1.000000000e+17 to get back to yoctojoules.
Frequently asked questions
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.
What is Erg (erg)?
An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
How do I convert yoctojoules to ergs?
Multiply the yoctojoule value by 1.000000000e-17 to get the equivalent in ergs. For example, 5 yJ × 1.000000000e-17 = 5.000000e-17 erg.
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 ergs back to yoctojoules?
Yes. Divide the erg value by 1.000000000e-17, or multiply it by 1.000000000e+17, to get yoctojoules.
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About converting yoctojoules to ergs
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. An erg is the CGS (centimeter-gram-second) unit of energy, equal to one ten-millionth of a joule.
Use this calculator to move between yoctojoules and ergs accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.