Convert pound foot/square second to newton [N] Online | Free force Converter

Pound Foot per Square Second [lbf·ft/s²]


This unit represents a torque or moment of force per unit time squared (though it’s an uncommon combination and can sometimes be context-specific).



  • It combines pound-force (lbf), a unit of force, with foot (ft), a unit of length, divided by second squared (s²), a unit of time squared.



  • It may be used in dynamics or rotational mechanics when dealing with angular accelerations or rate changes of torque.



  • In basic terms:



1 lbf\cdotpft/s2=force×distance÷time21 \text{ lbf·ft/s}^2 = \text{force} \times \text{distance} \div \text{time}^2

  • Since 1 lbf ≈ 4.44822 newtons and 1 ft ≈ 0.3048 meters, this can be converted into SI units as:



1 lbf\cdotpft/s21.35582 N\cdotpm/s21 \text{ lbf·ft/s}^2 \approx 1.35582 \text{ N·m/s}^2

  • Note: This unit is not commonly standard; usage depends on the specific physical context, like rotational dynamics.




Newton [N]


The newton (N) is the SI unit of force.



  • It is defined as the force required to accelerate a mass of one kilogram at a rate of one meter per second squared.



  • Mathematically:



1 N=1 kgm/s21 \text{ N} = 1 \text{ kg} \cdot \text{m/s}^2

  • Named after Sir Isaac Newton for his work on classical mechanics.



  • Commonly used to measure forces such as weight, tension, and thrust in physics and engineering.



Example: The weight of a 1 kg mass under Earth's gravity is approximately 9.8 N.



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