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 Megajoules
Convert Decijoule (dJ) to Megajoule (MJ) instantly with an exact formula, conversion table, and FAQ.
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Convert decijoules (dJ) 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 = dJ × 1.000000000e-07
Results update instantly for Decijoules to Megajoules conversions.
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Formula
MJ = dJ × 1.000000000e-07
dJ = MJ × 10000000
Conversion table
| 1 dJ | 1.000000e-07 MJ |
| 5 dJ | 5.000000e-07 MJ |
| 10 dJ | 0.000001 MJ |
| 20 dJ | 0.000002 MJ |
| 50 dJ | 0.000005 MJ |
| 100 dJ | 0.000010 MJ |
| 500 dJ | 0.000050 MJ |
| 1000 dJ | 0.000100 MJ |
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How the formula works
Both decijoule and megajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in decijoules by 1.000000000e-07 to get megajoules. To reverse the conversion, multiply a megajoule value by 10000000 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 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 decijoules to megajoules?
Multiply the decijoule value by 1.000000000e-07 to get the equivalent in megajoules. For example, 5 dJ × 1.000000000e-07 = 5.000000e-07 MJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-07 is an exact, non-rounded value.
Can I convert megajoules back to decijoules?
Yes. Divide the megajoule value by 1.000000000e-07, or multiply it by 10000000, to get decijoules.
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About converting decijoules to megajoules
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. 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 decijoules 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.