The British thermal unit (BTU) is the energy needed to raise one pound of water by one degree Fahrenheit, widely used for heating and air-conditioning ratings.
Btu to Decajoules
Convert British thermal unit (BTU) to Decajoule (daJ) instantly with an exact formula, conversion table, and FAQ.
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Convert btu (BTU) 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 = BTU × 105.5055853
Results update instantly for Btu to Decajoules conversions.
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Formula
daJ = BTU × 105.5055853
BTU = daJ × 0.009478171203
Conversion table
| 1 BTU | 105.505585 daJ |
| 5 BTU | 527.527926 daJ |
| 10 BTU | 1055.055853 daJ |
| 20 BTU | 2110.111705 daJ |
| 50 BTU | 5275.279263 daJ |
| 100 BTU | 10550.558526 daJ |
| 500 BTU | 52752.792631 daJ |
| 1000 BTU | 105505.585262 daJ |
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How the formula works
Both british thermal unit and decajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in btu by 105.5055853 to get decajoules. To reverse the conversion, multiply a decajoule value by 0.009478171203 to get back to btu.
Frequently asked questions
What is British thermal unit (BTU)?
The British thermal unit (BTU) is the energy needed to raise one pound of water by one degree Fahrenheit, widely used for heating and air-conditioning ratings.
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 btu to decajoules?
Multiply the british thermal unit value by 105.5055853 to get the equivalent in decajoules. For example, 5 BTU × 105.5055853 = 527.527926 daJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 105.5055853 is an exact, non-rounded value.
Can I convert decajoules back to btu?
Yes. Divide the decajoule value by 105.5055853, or multiply it by 0.009478171203, to get btu.
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About converting btu to decajoules
The British thermal unit (BTU) is the energy needed to raise one pound of water by one degree Fahrenheit, widely used for heating and air-conditioning ratings. 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 btu 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.