Torque Calculator
Estimate torque magnitude when a force acts perpendicular to a lever arm. Torque describes a turning effect, not power.
How to use this calculator
- Enter force in newtons and perpendicular distance from the axis in metres.
- Review the worked example for torque calculator and compare the inputs with your own units.
- Change one assumption at a time and recalculate if you need a second scenario.
Perpendicular torque
Torque = force × perpendicular lever arm; the result is in newton-metres (N·m).
- The simple product applies to a force perpendicular to the position vector; the general magnitude uses rF sin(theta).
- The result is calculated from the values entered; the page does not independently verify assumptions, data quality or real-world suitability.
Worked examples
Force on a wrench
An 80 N perpendicular force is applied 0.25 m from the pivot.
80 × 0.25 = 20 N·m.
Torque magnitude is 20 N·m.
Understanding the result
Increasing the lever arm increases torque for the same perpendicular force.
Forces at an angle, distributed loads, friction and changing geometry may need a vector or mechanical model.
Important notes
Use the perpendicular distance and suitable safety factors for equipment design.
Displayed figures are rounded for readability. Preserve more precision during intermediate calculations and verify the labels and units before using the estimate.
Frequently asked questions
What does the Torque Calculator show?
Increasing the lever arm increases torque for the same perpendicular force.
What assumptions should I check?
Use the perpendicular distance and suitable safety factors for equipment design.
Does this replace expert or authoritative guidance?
Forces at an angle, distributed loads, friction and changing geometry may need a vector or mechanical model.
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Related explanations
Learn the method behind the number or compare the terminology before using the calculator.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.