A attojoule (aJ) is a metric-prefixed unit of energy equal to 10-18 joules, a fraction of a single joule, using the SI atto prefix.
Attojoules to Ronnajoules
Convert Attojoule (aJ) to Ronnajoule (RJ) instantly with an exact formula, conversion table, and FAQ.
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Convert attojoules (aJ) to ronnajoules (RJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix.
RJ = aJ × 1.000000000e-45
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Formula
RJ = aJ × 1.000000000e-45
aJ = RJ × 1.000000000e+45
Conversion table
| 1 aJ | 1.000000e-45 RJ |
| 5 aJ | 5.000000e-45 RJ |
| 10 aJ | 1.000000e-44 RJ |
| 20 aJ | 2.000000e-44 RJ |
| 50 aJ | 5.000000e-44 RJ |
| 100 aJ | 1.000000e-43 RJ |
| 500 aJ | 5.000000e-43 RJ |
| 1000 aJ | 1.000000e-42 RJ |
Related conversions
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How the formula works
Both attojoule and ronnajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in attojoules by 1.000000000e-45 to get ronnajoules. To reverse the conversion, multiply a ronnajoule value by 1.000000000e+45 to get back to attojoules.
Frequently asked questions
What is Attojoule (aJ)?
A attojoule (aJ) is a metric-prefixed unit of energy equal to 10-18 joules, a fraction of a single joule, using the SI atto prefix.
What is Ronnajoule (RJ)?
A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix.
How do I convert attojoules to ronnajoules?
Multiply the attojoule value by 1.000000000e-45 to get the equivalent in ronnajoules. For example, 5 aJ × 1.000000000e-45 = 5.000000e-45 RJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-45 is an exact, non-rounded value.
Can I convert ronnajoules back to attojoules?
Yes. Divide the ronnajoule value by 1.000000000e-45, or multiply it by 1.000000000e+45, to get attojoules.
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About converting attojoules to ronnajoules
A attojoule (aJ) is a metric-prefixed unit of energy equal to 10-18 joules, a fraction of a single joule, using the SI atto prefix. A ronnajoule (RJ) is a metric-prefixed unit of energy equal to 1027 joules, using the SI ronna prefix.
Use this calculator to move between attojoules and ronnajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.