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 Petajoules
Convert Attojoule (aJ) to Petajoule (PJ) instantly with an exact formula, conversion table, and FAQ.
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Convert attojoules (aJ) to petajoules (PJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
PJ = aJ × 1.000000000e-33
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Formula
PJ = aJ × 1.000000000e-33
aJ = PJ × 1.000000000e+33
Conversion table
| 1 aJ | 1.000000e-33 PJ |
| 5 aJ | 5.000000e-33 PJ |
| 10 aJ | 1.000000e-32 PJ |
| 20 aJ | 2.000000e-32 PJ |
| 50 aJ | 5.000000e-32 PJ |
| 100 aJ | 1.000000e-31 PJ |
| 500 aJ | 5.000000e-31 PJ |
| 1000 aJ | 1.000000e-30 PJ |
Related conversions
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How the formula works
Both attojoule and petajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in attojoules by 1.000000000e-33 to get petajoules. To reverse the conversion, multiply a petajoule value by 1.000000000e+33 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 Petajoule (PJ)?
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
How do I convert attojoules to petajoules?
Multiply the attojoule value by 1.000000000e-33 to get the equivalent in petajoules. For example, 5 aJ × 1.000000000e-33 = 5.000000e-33 PJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-33 is an exact, non-rounded value.
Can I convert petajoules back to attojoules?
Yes. Divide the petajoule value by 1.000000000e-33, or multiply it by 1.000000000e+33, to get attojoules.
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About converting attojoules to petajoules
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 petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
Use this calculator to move between attojoules and petajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.