A hectojoule (hJ) is a metric-prefixed unit of energy equal to 102 joules, using the SI hecto prefix.
Hectojoules to Decajoules
Convert Hectojoule (hJ) to Decajoule (daJ) instantly with an exact formula, conversion table, and FAQ.
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Convert hectojoules (hJ) 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 = hJ × 10
Results update instantly for Hectojoules to Decajoules conversions.
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Formula
daJ = hJ × 10
hJ = daJ × 0.1
Conversion table
| 1 hJ | 10 daJ |
| 5 hJ | 50 daJ |
| 10 hJ | 100 daJ |
| 20 hJ | 200 daJ |
| 50 hJ | 500 daJ |
| 100 hJ | 1000 daJ |
| 500 hJ | 5000 daJ |
| 1000 hJ | 10000 daJ |
Related conversions
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How the formula works
Both hectojoule and decajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in hectojoules by 10 to get decajoules. To reverse the conversion, multiply a decajoule value by 0.1 to get back to hectojoules.
Frequently asked questions
What is Hectojoule (hJ)?
A hectojoule (hJ) is a metric-prefixed unit of energy equal to 102 joules, using the SI hecto 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 hectojoules to decajoules?
Multiply the hectojoule value by 10 to get the equivalent in decajoules. For example, 5 hJ × 10 = 50 daJ.
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 decajoules back to hectojoules?
Yes. Divide the decajoule value by 10, or multiply it by 0.1, to get hectojoules.
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About converting hectojoules to decajoules
A hectojoule (hJ) is a metric-prefixed unit of energy equal to 102 joules, using the SI hecto 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 hectojoules 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.