A decijoule (dJ) is a metric-prefixed unit of energy equal to 10-1 joules, a fraction of a single joule, using the SI deci prefix.
Decijoules to Joules
Convert Decijoule (dJ) to Joule (J) instantly with an exact formula, conversion table, and FAQ.
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Convert decijoules (dJ) 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 = dJ × 0.1
Results update instantly for Decijoules to Joules conversions.
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Formula
J = dJ × 0.1
dJ = J × 10
Conversion table
| 1 dJ | 0.100000 J |
| 5 dJ | 0.500000 J |
| 10 dJ | 1 J |
| 20 dJ | 2 J |
| 50 dJ | 5 J |
| 100 dJ | 10 J |
| 500 dJ | 50 J |
| 1000 dJ | 100 J |
Related conversions
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How the formula works
Both decijoule and joule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in decijoules by 0.1 to get joules. To reverse the conversion, multiply a joule value by 10 to get back to decijoules.
Frequently asked questions
What is Decijoule (dJ)?
A decijoule (dJ) is a metric-prefixed unit of energy equal to 10-1 joules, a fraction of a single joule, using the SI deci 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 decijoules to joules?
Multiply the decijoule value by 0.1 to get the equivalent in joules. For example, 5 dJ × 0.1 = 0.500000 J.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.1 is an exact, non-rounded value.
Can I convert joules back to decijoules?
Yes. Divide the joule value by 0.1, or multiply it by 10, to get decijoules.
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About converting decijoules to joules
A decijoule (dJ) is a metric-prefixed unit of energy equal to 10-1 joules, a fraction of a single joule, using the SI deci 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 decijoules 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.