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.
Nanojoules to Microjoules
Convert Nanojoule (nJ) to Microjoule (uJ) instantly with an exact formula, conversion table, and FAQ.
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Convert nanojoules (nJ) to microjoules (uJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix.
uJ = nJ × 0.001
Results update instantly for Nanojoules to Microjoules conversions.
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Formula
uJ = nJ × 0.001
nJ = uJ × 1000
Conversion table
| 1 nJ | 0.001000 uJ |
| 5 nJ | 0.005000 uJ |
| 10 nJ | 0.010000 uJ |
| 20 nJ | 0.020000 uJ |
| 50 nJ | 0.050000 uJ |
| 100 nJ | 0.100000 uJ |
| 500 nJ | 0.500000 uJ |
| 1000 nJ | 1 uJ |
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How the formula works
Both nanojoule and microjoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in nanojoules by 0.001 to get microjoules. To reverse the conversion, multiply a microjoule value by 1000 to get back to nanojoules.
Frequently asked questions
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.
What is Microjoule (uJ)?
A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix.
How do I convert nanojoules to microjoules?
Multiply the nanojoule value by 0.001 to get the equivalent in microjoules. For example, 5 nJ × 0.001 = 0.005000 uJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.001 is an exact, non-rounded value.
Can I convert microjoules back to nanojoules?
Yes. Divide the microjoule value by 0.001, or multiply it by 1000, to get nanojoules.
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About converting nanojoules to microjoules
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. A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix.
Use this calculator to move between nanojoules and microjoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.