The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage.
Therms to Foot-pounds
Convert US therm (therm) to Foot-pound (ft-lb) instantly with an exact formula, conversion table, and FAQ.
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Convert therms (therm) to foot-pounds (ft-lb) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A foot-pound (ft-lb) is the work done by one pound-force acting through a distance of one foot, commonly used in mechanical and engineering calculations.
ft-lb = therm × 77798350.53
Results update instantly for Therms to Foot-pounds conversions.
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Formula
ft-lb = therm × 77798350.53
therm = ft-lb × 1.285374295e-08
Conversion table
| 1 therm | 7.779835e+07 ft-lb |
| 5 therm | 3.889918e+08 ft-lb |
| 10 therm | 7.779835e+08 ft-lb |
| 20 therm | 1.555967e+09 ft-lb |
| 50 therm | 3.889918e+09 ft-lb |
| 100 therm | 7.779835e+09 ft-lb |
| 500 therm | 3.889918e+10 ft-lb |
| 1000 therm | 7.779835e+10 ft-lb |
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How the formula works
Both us therm and foot-pound measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in therms by 77798350.53 to get foot-pounds. To reverse the conversion, multiply a foot-pound value by 1.285374295e-08 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 Foot-pound (ft-lb)?
A foot-pound (ft-lb) is the work done by one pound-force acting through a distance of one foot, commonly used in mechanical and engineering calculations.
How do I convert therms to foot-pounds?
Multiply the us therm value by 77798350.53 to get the equivalent in foot-pounds. For example, 5 therm × 77798350.53 = 3.889918e+08 ft-lb.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 77798350.53 is an exact, non-rounded value.
Can I convert foot-pounds back to therms?
Yes. Divide the foot-pound value by 77798350.53, or multiply it by 1.285374295e-08, to get therms.
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About converting therms to foot-pounds
The US therm is a natural-gas billing unit equal to 100,000 BTU, used by utilities to measure gas usage. A foot-pound (ft-lb) is the work done by one pound-force acting through a distance of one foot, commonly used in mechanical and engineering calculations.
Use this calculator to move between therms and foot-pounds accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.