Torque Calculator
Calculate torque from power & RPM or from force & lever arm distance
Calculator
About the Torque Calculator
The Torque Calculator helps you quickly determine torque in a variety of mechanical and rotating systems. It supports calculations based on power and rotational speed (RPM), linear force and lever arm length, and force applied at an angle using the trigonometric torque relationship. This tool is ideal for mechanical engineers, automotive technicians, students, and anyone working with motors, engines, levers, or rotational machinery.
What You Can Calculate
- Torque from Power & RPM: Used for motors, engines, turbines, and rotating machinery.
- Torque from Force & Lever Arm: Ideal for hand tools, levers, and static moment calculations.
- Torque from Force Applied at an Angle: Uses trigonometric relationships to compute the effective rotational contribution of an angled force.
Formulas Used in the Calculator
The calculator uses standard equations from mechanics and rotational dynamics:
- Torque from Power:
T = (P × 60) / (2π × RPM)
Converts rotational power into torque. - Torque from Force & Lever Arm:
T = F × r
Basic moment calculation used in static mechanics. - Torque from Force Applied at an Angle:
T = F × r × sin(θ)
Accounts for the effective perpendicular component of the applied force.
How to Use the Calculator
- Select the desired calculation method: Power & RPM, Force & Lever Arm, or Force × Radius × sin(θ).
- Enter the required input values such as power, RPM, force, lever arm length, or angle.
- The calculator instantly displays the resulting torque in Newton-meters (N·m).
Applications of Torque Calculation
Torque calculations are fundamental in mechanical design, automotive engineering, rotating machinery analysis, and structural mechanics. Engineers use torque data to size shafts, select motors, evaluate mechanical advantage in lever systems, and analyze loads in rotating systems. Understanding torque is essential for ensuring proper performance, efficiency, and safety in mechanical systems ranging from hand tools to industrial equipment.