Momentum converter

Convert between any two momentum units. Momentum p = mass × velocity, so units always combine a mass and a velocity unit. The SI standard is kg·m/s, equivalent to N·s (impulse).

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Common values

  • 1 kg·m/s = 1 N·s = 7.233 lb·ft/s
  • 1 lb·ft/s ≈ 0.1383 kg·m/s
  • A 70 kg runner at 5 m/s carries 350 kg·m/s of momentum

FAQ

Why is N·s the same as kg·m/s?

Because impulse equals change in momentum: F · t = Δ(m·v). Newton-seconds and kilogram-metres-per-second are dimensionally identical.

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