Foot-pounds force to gallon-atmosphere (US) conversion calculator above calculates how many gallon-atmosphere (US) are in 'X' foot-pounds force (where 'X' is the number of foot-pounds force to convert to gallon-atmosphere (US)). In order to convert a value from foot-pounds force to gallon-atmosphere (US) (from ft lbf to gal atm) just type the number of ft lbf to be converted to gal atm and then click on the 'convert' button.