A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C.
Calories to Decajoules
Convert Calorie (cal) to Decajoule (daJ) instantly with an exact formula, conversion table, and FAQ.
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Convert calories (cal) 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 = cal × 0.4184
Results update instantly for Calories to Decajoules conversions.
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Formula
daJ = cal × 0.4184
cal = daJ × 2.390057361
Conversion table
| 1 cal | 0.418400 daJ |
| 5 cal | 2.092000 daJ |
| 10 cal | 4.184000 daJ |
| 20 cal | 8.368000 daJ |
| 50 cal | 20.920000 daJ |
| 100 cal | 41.840000 daJ |
| 500 cal | 209.200000 daJ |
| 1000 cal | 418.400000 daJ |
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How the formula works
Both calorie and decajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in calories by 0.4184 to get decajoules. To reverse the conversion, multiply a decajoule value by 2.390057361 to get back to calories.
Frequently asked questions
What is Calorie (cal)?
A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C.
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 calories to decajoules?
Multiply the calorie value by 0.4184 to get the equivalent in decajoules. For example, 5 cal × 0.4184 = 2.092000 daJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.4184 is an exact, non-rounded value.
Can I convert decajoules back to calories?
Yes. Divide the decajoule value by 0.4184, or multiply it by 2.390057361, to get calories.
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About converting calories to decajoules
A (small) calorie is a thermochemical unit of heat energy equal to 4.184 joules, historically the energy needed to raise 1 gram of water by 1°C. 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 calories 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.