Convert poundal [pdl] to pond [p] 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.


Pond [p]


The pond is a historical unit of force, equivalent to the force exerted by gravity on a mass of one gram.



  • It is part of the gram-force system and was widely used before the adoption of the newton in the SI system.



  • Mathematically:



1 pond=1 gram×9.80665 m/s2=0.00980665 newtons1 \text{ pond} = 1 \text{ gram} \times 9.80665 \text{ m/s}^2 = 0.00980665 \text{ newtons}

  • In other words, 1 pond is approximately 0.00981 newtons.



  • The pond is rarely used today, having been replaced by the newton, but it may still appear in older scientific literature or certain niche applications.



  • It is similar in concept to the gram-force (gf).





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