A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
Decajoules to Joules
Convert Decajoule (daJ) to Joule (J) instantly with an exact formula, conversion table, and FAQ.
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Convert decajoules (daJ) to joules (J) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
J = daJ × 10
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Formula
J = daJ × 10
daJ = J × 0.1
Conversion table
| 1 daJ | 10 J |
| 5 daJ | 50 J |
| 10 daJ | 100 J |
| 20 daJ | 200 J |
| 50 daJ | 500 J |
| 100 daJ | 1000 J |
| 500 daJ | 5000 J |
| 1000 daJ | 10000 J |
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How the formula works
Both decajoule and joule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in decajoules by 10 to get joules. To reverse the conversion, multiply a joule value by 0.1 to get back to decajoules.
Frequently asked questions
What is Decajoule (daJ)?
A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
What is Joule (J)?
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
How do I convert decajoules to joules?
Multiply the decajoule value by 10 to get the equivalent in joules. For example, 5 daJ × 10 = 50 J.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 10 is an exact, non-rounded value.
Can I convert joules back to decajoules?
Yes. Divide the joule value by 10, or multiply it by 0.1, to get decajoules.
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About converting decajoules to joules
A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix. The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
Use this calculator to move between decajoules and joules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.