Momentum Converter
Convert momentum/impulse-dimension values among kg·m/s, N·s, and lb·ft/s.
How to use
- Enter momentum or same-dimension impulse and select the context-appropriate units among kg·m/s, N·s, and lb·ft/s.
Capabilities and scope
Compare linear momentum units with newton-second, which has the same SI dimensions and is commonly used for impulse.
How it works
kg·m/s is the reference; N·s has factor 1 and lb·ft/s≈0.138254954 kg·m/s.
Example
10 N·s has the same dimensions and numeric SI value as 10 kg·m/s.
Useful for
- Compare momentum kg·m/s with impulse N·s
- Convert lb·ft/s to SI
- Align units in collision calculations
Before you use it
- Momentum and impulse share dimensions but represent different physical contexts. The converter does not calculate from mass/velocity or force/time.
Standards and references
Frequently asked questions
Why does N·s equal kg·m/s numerically?
Since N=kg·m/s², multiplying by seconds gives kg·m/s.