A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix.
Decajoules to Megajoules
Convert Decajoule (daJ) to Megajoule (MJ) instantly with an exact formula, conversion table, and FAQ.
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Convert decajoules (daJ) to megajoules (MJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
MJ = daJ × 0.00001
Results update instantly for Decajoules to Megajoules conversions.
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Formula
MJ = daJ × 0.00001
daJ = MJ × 100000
Conversion table
| 1 daJ | 0.000010 MJ |
| 5 daJ | 0.000050 MJ |
| 10 daJ | 0.000100 MJ |
| 20 daJ | 0.000200 MJ |
| 50 daJ | 0.000500 MJ |
| 100 daJ | 0.001000 MJ |
| 500 daJ | 0.005000 MJ |
| 1000 daJ | 0.010000 MJ |
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How the formula works
Both decajoule and megajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in decajoules by 0.00001 to get megajoules. To reverse the conversion, multiply a megajoule value by 100000 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 Megajoule (MJ)?
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
How do I convert decajoules to megajoules?
Multiply the decajoule value by 0.00001 to get the equivalent in megajoules. For example, 5 daJ × 0.00001 = 0.000050 MJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.00001 is an exact, non-rounded value.
Can I convert megajoules back to decajoules?
Yes. Divide the megajoule value by 0.00001, or multiply it by 100000, to get decajoules.
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About converting decajoules to megajoules
A decajoule (daJ) is a metric-prefixed unit of energy equal to 101 joules, using the SI deca prefix. A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
Use this calculator to move between decajoules and megajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.