Torque Calculator
Torque from a force applied at a distance, in N·m, kgf·m and lbf·ft.
Results
Torque
100.000
N·m
Torque
10.197
kgf·m
Torque
73.756
lbf·ft
What this tool does
Torque is force multiplied by the perpendicular distance to the axis, which is why a longer spanner needs less effort for the same result. The distance must be measured at right angles to the direction of the force; a force pointing along the arm produces no torque at all.
Formula
M = F × r
Variables
| Symbol | Meaning | Unit |
|---|---|---|
f | Force | N |
r | Length | m |
M | Torque | N·m |
Mk | Torque | kgf·m |
Ml | Torque | lbf·ft |
Worked example
- Force250 N
- Length0.4 m
- Torque100.000 N·m
- Torque10.197 kgf·m
- Torque73.756 lbf·ft
Limitations
- Mixing units is the most common source of error. Convert every input to the units shown next to each field before calculating.