A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
Gigajoules to Decajoules
Convert Gigajoule (GJ) to Decajoule (daJ) instantly with an exact formula, conversion table, and FAQ.
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Convert gigajoules (GJ) 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 = GJ × 100000000
Results update instantly for Gigajoules to Decajoules conversions.
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Formula
daJ = GJ × 100000000
GJ = daJ × 1.000000000e-08
Conversion table
| 1 GJ | 1.000000e+08 daJ |
| 5 GJ | 5.000000e+08 daJ |
| 10 GJ | 1.000000e+09 daJ |
| 20 GJ | 2.000000e+09 daJ |
| 50 GJ | 5.000000e+09 daJ |
| 100 GJ | 1.000000e+10 daJ |
| 500 GJ | 5.000000e+10 daJ |
| 1000 GJ | 1.000000e+11 daJ |
Related conversions
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How the formula works
Both gigajoule and decajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in gigajoules by 100000000 to get decajoules. To reverse the conversion, multiply a decajoule value by 1.000000000e-08 to get back to gigajoules.
Frequently asked questions
What is Gigajoule (GJ)?
A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga 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 gigajoules to decajoules?
Multiply the gigajoule value by 100000000 to get the equivalent in decajoules. For example, 5 GJ × 100000000 = 5.000000e+08 daJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 100000000 is an exact, non-rounded value.
Can I convert decajoules back to gigajoules?
Yes. Divide the decajoule value by 100000000, or multiply it by 1.000000000e-08, to get gigajoules.
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About converting gigajoules to decajoules
A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga 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 gigajoules 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.