Convert kilogram-force [kgf] to poundal [pdl] Online | Free force Converter

Kilogram-Force [kgf]


Kilogram-force (kgf) is a unit of force based on the force exerted by one kilogram of mass under standard gravity.



  • It is defined as the force exerted by a mass of 1 kilogram under Earth's gravitational acceleration (9.80665 m/s²).



  • Mathematically:



1 kgf=1 kg×9.80665 m/s2=9.80665 N1 \text{ kgf} = 1 \text{ kg} \times 9.80665 \text{ m/s}^2 = 9.80665 \text{ N}

  • Although not an SI unit, kilogram-force is commonly used in engineering and industries to express force more intuitively related to mass.



Example: A force of 10 kgf corresponds to approximately 98.07 newtons.



Poundal [pdl]


The poundal is a unit of force in the foot-pound-second (FPS) system, mainly used in the United States.



  • It is defined as the force required to accelerate a one-pound mass by one foot per second squared.



  • Mathematically:



1 pdl=1 lb×1 ft/s2=0.138255 newtons1 \text{ pdl} = 1 \text{ lb} \times 1 \text{ ft/s}^2 = 0.138255 \text{ newtons}

  • The poundal is smaller than the pound-force since Earth's gravity accelerates a pound mass at approximately 32.174 ft/s², making:



1 lbf=32.174 pdl1 \text{ lbf} = 32.174 \text{ pdl}

  • It is mostly of historical interest and rarely used in modern engineering but can appear in classical mechanics problems using the FPS system.



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