The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
Joules to Nanojoules
Convert Joule (J) to Nanojoule (nJ) instantly with an exact formula, conversion table, and FAQ.
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Convert joules (J) 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 = J × 1000000000
Results update instantly for Joules to Nanojoules conversions.
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Formula
nJ = J × 1000000000
J = nJ × 1.000000000e-09
Conversion table
| 1 J | 1.000000e+09 nJ |
| 5 J | 5.000000e+09 nJ |
| 10 J | 1.000000e+10 nJ |
| 20 J | 2.000000e+10 nJ |
| 50 J | 5.000000e+10 nJ |
| 100 J | 1.000000e+11 nJ |
| 500 J | 5.000000e+11 nJ |
| 1000 J | 1.000000e+12 nJ |
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How the formula works
Both joule and nanojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in joules by 1000000000 to get nanojoules. To reverse the conversion, multiply a nanojoule value by 1.000000000e-09 to get back to joules.
Frequently asked questions
What is Joule (J)?
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
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 joules to nanojoules?
Multiply the joule value by 1000000000 to get the equivalent in nanojoules. For example, 5 J × 1000000000 = 5.000000e+09 nJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1000000000 is an exact, non-rounded value.
Can I convert nanojoules back to joules?
Yes. Divide the nanojoule value by 1000000000, or multiply it by 1.000000000e-09, to get joules.
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About converting joules to nanojoules
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter. 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 joules 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.