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 Petajoules
Convert Femtojoule (fJ) to Petajoule (PJ) instantly with an exact formula, conversion table, and FAQ.
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Convert femtojoules (fJ) to petajoules (PJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
PJ = fJ × 1.000000000e-30
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Formula
PJ = fJ × 1.000000000e-30
fJ = PJ × 1.000000000e+30
Conversion table
| 1 fJ | 1.000000e-30 PJ |
| 5 fJ | 5.000000e-30 PJ |
| 10 fJ | 1.000000e-29 PJ |
| 20 fJ | 2.000000e-29 PJ |
| 50 fJ | 5.000000e-29 PJ |
| 100 fJ | 1.000000e-28 PJ |
| 500 fJ | 5.000000e-28 PJ |
| 1000 fJ | 1.000000e-27 PJ |
Related conversions
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How the formula works
Both femtojoule and petajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in femtojoules by 1.000000000e-30 to get petajoules. To reverse the conversion, multiply a petajoule value by 1.000000000e+30 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 Petajoule (PJ)?
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
How do I convert femtojoules to petajoules?
Multiply the femtojoule value by 1.000000000e-30 to get the equivalent in petajoules. For example, 5 fJ × 1.000000000e-30 = 5.000000e-30 PJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-30 is an exact, non-rounded value.
Can I convert petajoules back to femtojoules?
Yes. Divide the petajoule value by 1.000000000e-30, or multiply it by 1.000000000e+30, to get femtojoules.
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About converting femtojoules to petajoules
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 petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
Use this calculator to move between femtojoules and petajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.