Fundamental Torque Calculator
Calculate torque from force and perpendicular lever arm radius.
LIVE 2D EXPLANATION
T = F × rThe geometry, arrow and label respond to the current calculation state.
PRIMARY RESULT
Live calculation ready for review
This is an educational or preliminary result. Apply relevant standards and engineering judgement before use.
ENGINEERING PRINCIPLE
Torque is the turning effect of a force about an axis.
Calculate torque from force and perpendicular lever arm radius.
FORMULA & VARIABLES
T = F × r
- T = torque (N·m)
- F = perpendicular force (N)
- r = lever arm radius (m)
CALCULATION STEPS
How this result is assembled
- Convert the entered values to the SI basis required by the formula.
- Apply T = F × r using the current inputs.
- Present the result as 100 N·m and review the stated assumptions.
FORMULA VERIFICATION
Units, scope and reference
Reference: NIST SP 811 for unit relationships; standard classical mechanics and strength-of-materials derivations for the stated scalar relation.
Internal basis: All inputs are converted to the calculator’s SI base before the formula is evaluated.
Valid conditions: Positive finite scalar input values in the current calculator model.
Limitations: The force is perpendicular to the lever arm. For an angled load, use its perpendicular component.
ASSUMPTIONS
Use this result in context
- The force is perpendicular to the lever arm.
- For an angled load, use its perpendicular component.
Results must be verified by a qualified engineer and checked against applicable engineering standards, material properties, loading conditions and design requirements.
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OPTIONAL ENGINEERING HELP
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