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 Kilojoules
Convert Nanojoule (nJ) to Kilojoule (kJ) instantly with an exact formula, conversion table, and FAQ.
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Convert nanojoules (nJ) to kilojoules (kJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
kJ = nJ × 1.000000000e-12
Results update instantly for Nanojoules to Kilojoules conversions.
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Formula
kJ = nJ × 1.000000000e-12
nJ = kJ × 1000000000000
Conversion table
| 1 nJ | 1.000000e-12 kJ |
| 5 nJ | 5.000000e-12 kJ |
| 10 nJ | 1.000000e-11 kJ |
| 20 nJ | 2.000000e-11 kJ |
| 50 nJ | 5.000000e-11 kJ |
| 100 nJ | 1.000000e-10 kJ |
| 500 nJ | 5.000000e-10 kJ |
| 1000 nJ | 1.000000e-09 kJ |
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How the formula works
Both nanojoule and kilojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in nanojoules by 1.000000000e-12 to get kilojoules. To reverse the conversion, multiply a kilojoule value by 1000000000000 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 Kilojoule (kJ)?
A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
How do I convert nanojoules to kilojoules?
Multiply the nanojoule value by 1.000000000e-12 to get the equivalent in kilojoules. For example, 5 nJ × 1.000000000e-12 = 5.000000e-12 kJ.
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 kilojoules back to nanojoules?
Yes. Divide the kilojoule value by 1.000000000e-12, or multiply it by 1000000000000, to get nanojoules.
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About converting nanojoules to kilojoules
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 kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
Use this calculator to move between nanojoules and kilojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.