A quectojoule (qJ) is a metric-prefixed unit of energy equal to 10-30 joules, a fraction of a single joule, using the SI quecto prefix.
Quectojoules to Attojoules
Convert Quectojoule (qJ) to Attojoule (aJ) instantly with an exact formula, conversion table, and FAQ.
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Convert quectojoules (qJ) to attojoules (aJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
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.
aJ = qJ × 1.000000000e-12
Results update instantly for Quectojoules to Attojoules conversions.
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Formula
aJ = qJ × 1.000000000e-12
qJ = aJ × 1000000000000
Conversion table
| 1 qJ | 1.000000e-12 aJ |
| 5 qJ | 5.000000e-12 aJ |
| 10 qJ | 1.000000e-11 aJ |
| 20 qJ | 2.000000e-11 aJ |
| 50 qJ | 5.000000e-11 aJ |
| 100 qJ | 1.000000e-10 aJ |
| 500 qJ | 5.000000e-10 aJ |
| 1000 qJ | 1.000000e-09 aJ |
Related conversions
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How the formula works
Both quectojoule and attojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in quectojoules by 1.000000000e-12 to get attojoules. To reverse the conversion, multiply a attojoule value by 1000000000000 to get back to quectojoules.
Frequently asked questions
What is Quectojoule (qJ)?
A quectojoule (qJ) is a metric-prefixed unit of energy equal to 10-30 joules, a fraction of a single joule, using the SI quecto prefix.
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.
How do I convert quectojoules to attojoules?
Multiply the quectojoule value by 1.000000000e-12 to get the equivalent in attojoules. For example, 5 qJ × 1.000000000e-12 = 5.000000e-12 aJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-12 is an exact, non-rounded value.
Can I convert attojoules back to quectojoules?
Yes. Divide the attojoule value by 1.000000000e-12, or multiply it by 1000000000000, to get quectojoules.
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About converting quectojoules to attojoules
A quectojoule (qJ) is a metric-prefixed unit of energy equal to 10-30 joules, a fraction of a single joule, using the SI quecto prefix. 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.
Use this calculator to move between quectojoules and attojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.