Therms (US) to Foot-Pounds (ft·lbf) Converter
Enter a value to instantly convert between energy units.
1 Therm (US) = 77798350.5306 Foot-Pound Force
Key Formulas
Kilocalorie → Kilojoule
kJ = kcal × 4.184Kilojoule → Kilocalorie
kcal = kJ × 0.239006Kilowatt-Hour → Joule
J = kWh × 3600000Joule → Kilowatt-Hour
kWh = J × 2.77778e-7Formula
ft·lbf = therms × 77,816,934One therm equals 100,000 BTU, and since 1 BTU = 778.17 ft·lbf, a therm equals 77.82 million ft·lbf. This conversion is useful for mechanical engineers sizing gas equipment, calculating pump work, or comparing energy delivery across different unit systems.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
An engineer verifying: 1 therm = 77.8 million ft·lbf for gas pipeline capacity calculations.
1 thm = 77816934 ft·lbf
A mechanical designer calculating 5 therms/hr gas burner work output in ft·lbf for equipment sizing.
5 thm = 390084670 ft·lbf
A facilities engineer converting 25 therms daily gas consumption to ft·lbf for demand profiling.
25 thm = 1950423350 ft·lbf
An energy auditor estimating 100 therms monthly usage as 7.78 billion ft·lbf for an industrial client.
100 thm = 7781693400 ft·lbf