Convert poundal [pdl] to kilopound-force [kipf] Online | Free force Converter

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.


Kilopound-Force [kipf]


The kilopound-force (kipf) is a unit of force commonly used in engineering, especially in the United States.



  • It equals 1,000 pound-force (lbf).



  • Mathematically:



1 kipf=1,000 lbf4,448.22 newtons1 \text{ kipf} = 1,000 \text{ lbf} \approx 4,448.22 \text{ newtons}

  • The kipf is often used to express large forces such as structural loads, stresses in materials, or foundation pressures.



  • It simplifies large force values by grouping them in thousands of pounds-force, making calculations and communication more convenient.





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