Convert pond [p] to ton-force (metric) [tf] Online | Free force Converter

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  • The pond is rarely used today, having been replaced by the newton, but it may still appear in older scientific literature or certain niche applications.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




Ton-Force (Metric) [tf]


Ton-force (metric), also called tonne-force or metric ton-force (tf), is a unit of force based on the force exerted by one metric ton (1,000 kilograms) under standard gravity.



  • Defined as the force exerted by a mass of 1 metric ton under Earth's gravity (9.80665 m/s²).



  • Mathematically:



1 tf=1,000 kg×9.80665 m/s2=9,806.65 N1 \text{ tf} = 1,000 \text{ kg} \times 9.80665 \text{ m/s}^2 = 9,806.65 \text{ N}

  • Though not an SI unit, it is widely used in engineering and heavy industries to measure large forces.



Example: A force of 5 tf corresponds to approximately 49,033 newtons.



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