{{Short description|Unit of energy}} {{distinguish|Foot-pound|Pound-foot}} The '''foot-poundal''' (symbol: '''ft-pdl''') is a unit of energy, introduced in 1879, that is part of the Absolute English system of units, which itself is a coherent subsystem of the foot–pound–second system.<ref> Edward F. Obert, Thermodynamics, McGraw-Hill Book Co., 1948.</ref>
The foot-poundal is equal to 1/32.174049 that of the more commonly used foot-pound force.
== Conversions == 1 foot-poundal is equivalent to: * 0.031081 ft•lb<sub>f</sub> * 0.0421401100938048 J (exactly) * 421401.100938048 erg (exactly) * 0.0004 BTU<sub>IT</sub> * 0.010065 cal<sub>IT</sub> or 0.000 010 65 "food calorie" (kcal or Cal) * 0.37297 inch-pound force (in•lb<sub>f</sub>) * 5.96752 inch-ounce force (in•oz<sub>f</sub>)
==See also== *Poundal *Foot-pound (energy) *Pound-force *Slug (unit) *Units of energy
==Footnotes== {{Reflist}}
{{Imperial units}}
Category:Units of energy Category:Units of torque Category:Imperial units