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 Decajoules
Convert Femtojoule (fJ) to Decajoule (daJ) instantly with an exact formula, conversion table, and FAQ.
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Convert femtojoules (fJ) to decajoules (daJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
daJ = fJ × 1.000000000e-16
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Formula
daJ = fJ × 1.000000000e-16
fJ = daJ × 1.000000000e+16
Conversion table
| 1 fJ | 1.000000e-16 daJ |
| 5 fJ | 5.000000e-16 daJ |
| 10 fJ | 1.000000e-15 daJ |
| 20 fJ | 2.000000e-15 daJ |
| 50 fJ | 5.000000e-15 daJ |
| 100 fJ | 1.000000e-14 daJ |
| 500 fJ | 5.000000e-14 daJ |
| 1000 fJ | 1.000000e-13 daJ |
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How the formula works
Both femtojoule and decajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in femtojoules by 1.000000000e-16 to get decajoules. To reverse the conversion, multiply a decajoule value by 1.000000000e+16 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 Decajoule (daJ)?
A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
How do I convert femtojoules to decajoules?
Multiply the femtojoule value by 1.000000000e-16 to get the equivalent in decajoules. For example, 5 fJ × 1.000000000e-16 = 5.000000e-16 daJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-16 is an exact, non-rounded value.
Can I convert decajoules back to femtojoules?
Yes. Divide the decajoule value by 1.000000000e-16, or multiply it by 1.000000000e+16, to get femtojoules.
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About converting femtojoules to decajoules
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 decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
Use this calculator to move between femtojoules and decajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.