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.
Foot-pounds to Therms
Convert Foot-pound (ft-lb) to US therm (therm) instantly with an exact formula, conversion table, and FAQ.
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Convert foot-pounds (ft-lb) 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 = ft-lb × 1.285374295e-08
Results update instantly for Foot-pounds to Therms conversions.
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Formula
therm = ft-lb × 1.285374295e-08
ft-lb = therm × 77798350.53
Conversion table
| 1 ft-lb | 1.285374e-08 therm |
| 5 ft-lb | 6.426871e-08 therm |
| 10 ft-lb | 1.285374e-07 therm |
| 20 ft-lb | 2.570749e-07 therm |
| 50 ft-lb | 6.426871e-07 therm |
| 100 ft-lb | 0.000001 therm |
| 500 ft-lb | 0.000006 therm |
| 1000 ft-lb | 0.000013 therm |
Related conversions
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How the formula works
Both foot-pound and us therm measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in foot-pounds by 1.285374295e-08 to get therms. To reverse the conversion, multiply a us therm value by 77798350.53 to get back to foot-pounds.
Frequently asked questions
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.
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 foot-pounds to therms?
Multiply the foot-pound value by 1.285374295e-08 to get the equivalent in therms. For example, 5 ft-lb × 1.285374295e-08 = 6.426871e-08 therm.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.285374295e-08 is an exact, non-rounded value.
Can I convert therms back to foot-pounds?
Yes. Divide the us therm value by 1.285374295e-08, or multiply it by 77798350.53, to get foot-pounds.
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About converting foot-pounds to therms
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. 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 foot-pounds 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.