A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
Kilojoules to Nanojoules
Convert Kilojoule (kJ) to Nanojoule (nJ) instantly with an exact formula, conversion table, and FAQ.
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Convert kilojoules (kJ) 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 = kJ × 1000000000000
Results update instantly for Kilojoules to Nanojoules conversions.
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Formula
nJ = kJ × 1000000000000
kJ = nJ × 1.000000000e-12
Conversion table
| 1 kJ | 1.000000e+12 nJ |
| 5 kJ | 5.000000e+12 nJ |
| 10 kJ | 1.000000e+13 nJ |
| 20 kJ | 2.000000e+13 nJ |
| 50 kJ | 5.000000e+13 nJ |
| 100 kJ | 1.000000e+14 nJ |
| 500 kJ | 5.000000e+14 nJ |
| 1000 kJ | 1.000000e+15 nJ |
Related conversions
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How the formula works
Both kilojoule and nanojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in kilojoules by 1000000000000 to get nanojoules. To reverse the conversion, multiply a nanojoule value by 1.000000000e-12 to get back to kilojoules.
Frequently asked questions
What is Kilojoule (kJ)?
A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States.
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 kilojoules to nanojoules?
Multiply the kilojoule value by 1000000000000 to get the equivalent in nanojoules. For example, 5 kJ × 1000000000000 = 5.000000e+12 nJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1000000000000 is an exact, non-rounded value.
Can I convert nanojoules back to kilojoules?
Yes. Divide the nanojoule value by 1000000000000, or multiply it by 1.000000000e-12, to get kilojoules.
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About converting kilojoules to nanojoules
A kilojoule (kJ) equals 1,000 joules and is commonly used on nutrition labels outside the United States. 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 kilojoules 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.