A picojoule (pJ) is a metric-prefixed unit of energy equal to 10-12 joules, a fraction of a single joule, using the SI pico prefix.
Picojoules to Kilojoules
Convert Picojoule (pJ) to Kilojoule (kJ) instantly with an exact formula, conversion table, and FAQ.
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Convert picojoules (pJ) 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 = pJ × 1.000000000e-15
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Formula
kJ = pJ × 1.000000000e-15
pJ = kJ × 1.000000000e+15
Conversion table
| 1 pJ | 1.000000e-15 kJ |
| 5 pJ | 5.000000e-15 kJ |
| 10 pJ | 1.000000e-14 kJ |
| 20 pJ | 2.000000e-14 kJ |
| 50 pJ | 5.000000e-14 kJ |
| 100 pJ | 1.000000e-13 kJ |
| 500 pJ | 5.000000e-13 kJ |
| 1000 pJ | 1.000000e-12 kJ |
Related conversions
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How the formula works
Both picojoule and kilojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in picojoules by 1.000000000e-15 to get kilojoules. To reverse the conversion, multiply a kilojoule value by 1.000000000e+15 to get back to picojoules.
Frequently asked questions
What is Picojoule (pJ)?
A picojoule (pJ) is a metric-prefixed unit of energy equal to 10-12 joules, a fraction of a single joule, using the SI pico 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 picojoules to kilojoules?
Multiply the picojoule value by 1.000000000e-15 to get the equivalent in kilojoules. For example, 5 pJ × 1.000000000e-15 = 5.000000e-15 kJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-15 is an exact, non-rounded value.
Can I convert kilojoules back to picojoules?
Yes. Divide the kilojoule value by 1.000000000e-15, or multiply it by 1.000000000e+15, to get picojoules.
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About converting picojoules to kilojoules
A picojoule (pJ) is a metric-prefixed unit of energy equal to 10-12 joules, a fraction of a single joule, using the SI pico 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 picojoules 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.