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. 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•lbf 0.0421401100938048 J (exactly) 421401.100938048 erg (exactly) 0.0004 BTUIT 0.010065 calIT or 0.000 010 65 "food calorie" (kcal or Cal) 0.37297 inch-pound force (in•lbf) 5.96752 inch-ounce force (in•ozf) See also Poundal Foot-pound force Pound-force Slug (unit) Units of energy Footnotes Units of energy Units of torque Imperial units