A femtojoule (fJ) is a metric-prefixed unit of energy equal to 10-15 joules, a fraction of a single joule, using the SI femto prefix.
Femtojoules to Picojoules
Convert Femtojoule (fJ) to Picojoule (pJ) instantly with an exact formula, conversion table, and FAQ.
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Convert femtojoules (fJ) to picojoules (pJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
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.
pJ = fJ × 0.001
Results update instantly for Femtojoules to Picojoules conversions.
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Formula
pJ = fJ × 0.001
fJ = pJ × 1000
Conversion table
| 1 fJ | 0.001000 pJ |
| 5 fJ | 0.005000 pJ |
| 10 fJ | 0.010000 pJ |
| 20 fJ | 0.020000 pJ |
| 50 fJ | 0.050000 pJ |
| 100 fJ | 0.100000 pJ |
| 500 fJ | 0.500000 pJ |
| 1000 fJ | 1 pJ |
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How the formula works
Both femtojoule and picojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in femtojoules by 0.001 to get picojoules. To reverse the conversion, multiply a picojoule value by 1000 to get back to femtojoules.
Frequently asked questions
What is Femtojoule (fJ)?
A femtojoule (fJ) is a metric-prefixed unit of energy equal to 10-15 joules, a fraction of a single joule, using the SI femto prefix.
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.
How do I convert femtojoules to picojoules?
Multiply the femtojoule value by 0.001 to get the equivalent in picojoules. For example, 5 fJ × 0.001 = 0.005000 pJ.
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 picojoules back to femtojoules?
Yes. Divide the picojoule value by 0.001, or multiply it by 1000, to get femtojoules.
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About converting femtojoules to picojoules
A femtojoule (fJ) is a metric-prefixed unit of energy equal to 10-15 joules, a fraction of a single joule, using the SI femto prefix. 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.
Use this calculator to move between femtojoules and picojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.