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 Exajoules
Convert Yoctojoule (yJ) to Exajoule (EJ) instantly with an exact formula, conversion table, and FAQ.
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Convert yoctojoules (yJ) 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 = yJ × 1.000000000e-42
Results update instantly for Yoctojoules to Exajoules conversions.
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Formula
EJ = yJ × 1.000000000e-42
yJ = EJ × 1.000000000e+42
Conversion table
| 1 yJ | 1.000000e-42 EJ |
| 5 yJ | 5.000000e-42 EJ |
| 10 yJ | 1.000000e-41 EJ |
| 20 yJ | 2.000000e-41 EJ |
| 50 yJ | 5.000000e-41 EJ |
| 100 yJ | 1.000000e-40 EJ |
| 500 yJ | 5.000000e-40 EJ |
| 1000 yJ | 1.000000e-39 EJ |
Related conversions
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How the formula works
Both yoctojoule and exajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in yoctojoules by 1.000000000e-42 to get exajoules. To reverse the conversion, multiply a exajoule value by 1.000000000e+42 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 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 yoctojoules to exajoules?
Multiply the yoctojoule value by 1.000000000e-42 to get the equivalent in exajoules. For example, 5 yJ × 1.000000000e-42 = 5.000000e-42 EJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-42 is an exact, non-rounded value.
Can I convert exajoules back to yoctojoules?
Yes. Divide the exajoule value by 1.000000000e-42, or multiply it by 1.000000000e+42, to get yoctojoules.
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About converting yoctojoules to exajoules
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. 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 yoctojoules 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.