The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
Therms to Terajoules
Convert US therm (therm) to Terajoule (TJ) instantly with an exact formula, conversion table, and FAQ.
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Convert therms (therm) 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 = therm × 0.0001054804
Results update instantly for Therms to Terajoules conversions.
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Formula
TJ = therm × 0.0001054804
therm = TJ × 9480.43428
Conversion table
| 1 therm | 0.000105 TJ |
| 5 therm | 0.000527 TJ |
| 10 therm | 0.001055 TJ |
| 20 therm | 0.002110 TJ |
| 50 therm | 0.005274 TJ |
| 100 therm | 0.010548 TJ |
| 500 therm | 0.052740 TJ |
| 1000 therm | 0.105480 TJ |
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How the formula works
Both us therm and terajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in therms by 0.0001054804 to get terajoules. To reverse the conversion, multiply a terajoule value by 9480.43428 to get back to therms.
Frequently asked questions
What is US therm (therm)?
The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
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 therms to terajoules?
Multiply the us therm value by 0.0001054804 to get the equivalent in terajoules. For example, 5 therm × 0.0001054804 = 0.000527 TJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 0.0001054804 is an exact, non-rounded value.
Can I convert terajoules back to therms?
Yes. Divide the terajoule value by 0.0001054804, or multiply it by 9480.43428, to get therms.
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About converting therms to terajoules
The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage. 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 therms 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.