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 Nanojoules
Convert Quectojoule (qJ) to Nanojoule (nJ) instantly with an exact formula, conversion table, and FAQ.
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Convert quectojoules (qJ) to nanojoules (nJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A nanojoule (nJ) is a metric-prefixed unit of energy equal to 10-9 joules, a fraction of a single joule, using the SI nano prefix.
nJ = qJ × 1.000000000e-21
Results update instantly for Quectojoules to Nanojoules conversions.
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Formula
nJ = qJ × 1.000000000e-21
qJ = nJ × 1.000000000e+21
Conversion table
| 1 qJ | 1.000000e-21 nJ |
| 5 qJ | 5.000000e-21 nJ |
| 10 qJ | 1.000000e-20 nJ |
| 20 qJ | 2.000000e-20 nJ |
| 50 qJ | 5.000000e-20 nJ |
| 100 qJ | 1.000000e-19 nJ |
| 500 qJ | 5.000000e-19 nJ |
| 1000 qJ | 1.000000e-18 nJ |
Related conversions
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How the formula works
Both quectojoule and nanojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in quectojoules by 1.000000000e-21 to get nanojoules. To reverse the conversion, multiply a nanojoule value by 1.000000000e+21 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 Nanojoule (nJ)?
A nanojoule (nJ) is a metric-prefixed unit of energy equal to 10-9 joules, a fraction of a single joule, using the SI nano prefix.
How do I convert quectojoules to nanojoules?
Multiply the quectojoule value by 1.000000000e-21 to get the equivalent in nanojoules. For example, 5 qJ × 1.000000000e-21 = 5.000000e-21 nJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-21 is an exact, non-rounded value.
Can I convert nanojoules back to quectojoules?
Yes. Divide the nanojoule value by 1.000000000e-21, or multiply it by 1.000000000e+21, to get quectojoules.
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About converting quectojoules to nanojoules
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 nanojoule (nJ) is a metric-prefixed unit of energy equal to 10-9 joules, a fraction of a single joule, using the SI nano prefix.
Use this calculator to move between quectojoules and nanojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.