The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
Joules to Therms
Convert Joule (J) to US therm (therm) instantly with an exact formula, conversion table, and FAQ.
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Convert joules (J) to therms (therm) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
therm = J × 9.480434280e-09
Results update instantly for Joules to Therms conversions.
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Formula
therm = J × 9.480434280e-09
J = therm × 105480400
Conversion table
| 1 J | 9.480434e-09 therm |
| 5 J | 4.740217e-08 therm |
| 10 J | 9.480434e-08 therm |
| 20 J | 1.896087e-07 therm |
| 50 J | 4.740217e-07 therm |
| 100 J | 9.480434e-07 therm |
| 500 J | 0.000005 therm |
| 1000 J | 0.000009 therm |
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How the formula works
Both joule and us therm measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in joules by 9.480434280e-09 to get therms. To reverse the conversion, multiply a us therm value by 105480400 to get back to joules.
Frequently asked questions
What is Joule (J)?
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter.
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.
How do I convert joules to therms?
Multiply the joule value by 9.480434280e-09 to get the equivalent in therms. For example, 5 J × 9.480434280e-09 = 4.740217e-08 therm.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 9.480434280e-09 is an exact, non-rounded value.
Can I convert therms back to joules?
Yes. Divide the us therm value by 9.480434280e-09, or multiply it by 105480400, to get joules.
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About converting joules to therms
The joule (J) is the SI derived unit of energy, equal to the work done when a force of one newton acts over one meter. The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
Use this calculator to move between joules and therms accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.