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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•lb_f
• 0.0421401100938048 J (exactly)
• 421401.100938048 erg (exactly)
• 0.0004 BTU_IT
• 0.010065 cal_IT or 0.000 010 65 "food calorie" (kcal or Cal)
• 0.37297 inch-pound force (in•lb_f)
• 5.96752 inch-ounce force (in•oz_f)

See also

• Poundal
• Foot-pound (energy)
• Pound-force
• Slug (unit)
• Units of energy

Footnotes

1. Edward F. Obert, Thermodynamics, McGraw-Hill Book Co., 1948.

• Units of energy
• Units of torque
• Imperial units