A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Terajoules to Btu
Convert Terajoule (TJ) to British thermal unit (BTU) instantly with an exact formula, conversion table, and FAQ.
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Convert terajoules (TJ) to btu (BTU) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
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 = TJ × 947817120.3
Results update instantly for Terajoules to Btu conversions.
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Formula
BTU = TJ × 947817120.3
TJ = BTU × 1.055055853e-09
Conversion table
| 1 TJ | 9.478171e+08 BTU |
| 5 TJ | 4.739086e+09 BTU |
| 10 TJ | 9.478171e+09 BTU |
| 20 TJ | 1.895634e+10 BTU |
| 50 TJ | 4.739086e+10 BTU |
| 100 TJ | 9.478171e+10 BTU |
| 500 TJ | 4.739086e+11 BTU |
| 1000 TJ | 9.478171e+11 BTU |
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How the formula works
Both terajoule and british thermal unit measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in terajoules by 947817120.3 to get btu. To reverse the conversion, multiply a british thermal unit value by 1.055055853e-09 to get back to terajoules.
Frequently asked questions
What is Terajoule (TJ)?
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
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.
How do I convert terajoules to btu?
Multiply the terajoule value by 947817120.3 to get the equivalent in btu. For example, 5 TJ × 947817120.3 = 4.739086e+09 BTU.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 947817120.3 is an exact, non-rounded value.
Can I convert btu back to terajoules?
Yes. Divide the british thermal unit value by 947817120.3, or multiply it by 1.055055853e-09, to get terajoules.
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About converting terajoules to btu
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix. 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.
Use this calculator to move between terajoules and btu accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.