Torque Calculator
Torque calculator
Calculate torque from force, lever arm, and angle.
Result
31.5 N·m
Uses tau = r × F × sin(theta).
Physics signal
Advanced options
Flow
- Enter force, lever arm, and angle between them.
- Review resulting torque in N·m.
- Use sign convention from your rotational coordinate setup if needed.
Example
Worked example: 90 N on 0.35 m lever at 90°
- 1 tau = 0.35 × 90 × sin(90°)
- 2 sin(90°) = 1
- 3 tau = 31.5 N·m
Torque magnitude is 31.5 N·m.
How
- Enter force, lever arm, and angle between them.
- Review resulting torque in N·m.
- Use sign convention from your rotational coordinate setup if needed.
Avoid
- Using full object length instead of perpendicular lever arm distance.
- Confusing torque units with energy units despite both using N·m notation.
- Applying cosine instead of sine for perpendicular force component.
Checks
Best fit
Torque Calculator is built for compute torque from applied force, lever arm length, and force angle. If Torque Calculator does not match the input scope, compare the answer with a second method.
Input check
Match the entered values to this rule before copying the answer: tau = r × F × sin(theta).
Sanity check
For Torque Calculator, use the worked example as a quick benchmark: Torque magnitude is 31.5 N·m. If the torque calculator answer is far away, check whether an input, unit, or mode changed.
Before copying
Review this common issue first: using full object length instead of perpendicular lever arm distance.
FAQ
Why does angle matter in torque?
Only the perpendicular force component contributes to torque.
Can torque be negative?
Yes, sign depends on your rotational direction convention.
Is this static or dynamic torque?
It computes instantaneous torque magnitude from force geometry.
Switch
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