How is torque calculated?

Torque = force × distance from the pivot point (lever arm).

Why does a longer wrench make loosening a bolt easier?

A longer lever arm produces more torque for the same applied force.

What units is torque measured in?

Newton-meters (N·m) in SI units, or foot-pounds in imperial units.

Torque Calculator - CalculatorLabs.net

Torque Calculator

Torque is the rotational equivalent of force — it's what makes things spin or turn, like tightening a bolt with a wrench.

Force (N)

Lever Arm Length (m)

Angle Between Force & Lever (°)

Instant Result

Torque -

What Is a Torque Calculator?

Torque is the rotational equivalent of force — it's what makes things spin or turn, like tightening a bolt with a wrench. It depends on how much force is applied, how far from the pivot point it's applied, and the angle at which it's applied.

How to Use This Torque Calculator

Enter the force applied, in newtons.
Enter the length of the lever arm (distance from the pivot), in meters.
Enter the angle between the force and the lever arm (use 90° if the force is perpendicular, which gives the maximum torque).
Click Calculate to get the torque in newton-meters.

Formula

Torque = Force × Lever Arm × sin(θ)
τ = F × r × sin(θ)

Worked Example

A mechanic applies 150 N perpendicular to a 0.3 m wrench. Torque = 150 × 0.3 × sin(90°) = 45 N·m.