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 Terajoules
Convert British thermal unit (BTU) to Terajoule (TJ) instantly with an exact formula, conversion table, and FAQ.
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Convert btu (BTU) to terajoules (TJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
TJ = BTU × 1.055055853e-09
Results update instantly for Btu to Terajoules conversions.
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Formula
TJ = BTU × 1.055055853e-09
BTU = TJ × 947817120.3
Conversion table
| 1 BTU | 1.055056e-09 TJ |
| 5 BTU | 5.275279e-09 TJ |
| 10 BTU | 1.055056e-08 TJ |
| 20 BTU | 2.110112e-08 TJ |
| 50 BTU | 5.275279e-08 TJ |
| 100 BTU | 1.055056e-07 TJ |
| 500 BTU | 5.275279e-07 TJ |
| 1000 BTU | 0.000001 TJ |
Related conversions
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How the formula works
Both british thermal unit and terajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in btu by 1.055055853e-09 to get terajoules. To reverse the conversion, multiply a terajoule value by 947817120.3 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 Terajoule (TJ)?
A terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
How do I convert btu to terajoules?
Multiply the british thermal unit value by 1.055055853e-09 to get the equivalent in terajoules. For example, 5 BTU × 1.055055853e-09 = 5.275279e-09 TJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.055055853e-09 is an exact, non-rounded value.
Can I convert terajoules back to btu?
Yes. Divide the terajoule value by 1.055055853e-09, or multiply it by 947817120.3, to get btu.
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About converting btu to terajoules
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 terajoule (TJ) is a metric-prefixed unit of energy equal to 1012 joules, using the SI tera prefix.
Use this calculator to move between btu and terajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.