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 Yottajoules
Convert Attojoule (aJ) to Yottajoule (YJ) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Energy calculator
Energy Converter
Convert attojoules (aJ) to yottajoules (YJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A yottajoule (YJ) is a metric-prefixed unit of energy equal to 1024 joules, using the SI yotta prefix.
YJ = aJ × 1.000000000e-42
Results update instantly for Attojoules to Yottajoules conversions.
Reserved above the conversion cards and below the converter.
Formula
YJ = aJ × 1.000000000e-42
aJ = YJ × 1.000000000e+42
Conversion table
| 1 aJ | 1.000000e-42 YJ |
| 5 aJ | 5.000000e-42 YJ |
| 10 aJ | 1.000000e-41 YJ |
| 20 aJ | 2.000000e-41 YJ |
| 50 aJ | 5.000000e-41 YJ |
| 100 aJ | 1.000000e-40 YJ |
| 500 aJ | 5.000000e-40 YJ |
| 1000 aJ | 1.000000e-39 YJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both attojoule and yottajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in attojoules by 1.000000000e-42 to get yottajoules. To reverse the conversion, multiply a yottajoule value by 1.000000000e+42 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 Yottajoule (YJ)?
A yottajoule (YJ) is a metric-prefixed unit of energy equal to 1024 joules, using the SI yotta prefix.
How do I convert attojoules to yottajoules?
Multiply the attojoule value by 1.000000000e-42 to get the equivalent in yottajoules. For example, 5 aJ × 1.000000000e-42 = 5.000000e-42 YJ.
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 yottajoules back to attojoules?
Yes. Divide the yottajoule value by 1.000000000e-42, or multiply it by 1.000000000e+42, to get attojoules.
Reserved between the FAQ and the article so the page stays balanced.
About converting attojoules to yottajoules
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 yottajoule (YJ) is a metric-prefixed unit of energy equal to 1024 joules, using the SI yotta prefix.
Use this calculator to move between attojoules and yottajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.