Torque Calculator

Introduction

The torque calculator helps you determine the rotational force (torque) generated when a force is applied at a distance from a pivot point. It is widely used in mechanical engineering, automotive work, and physics problem-solving.

How to Use

Enter the applied force (F) in Newtons.

Enter the distance from the pivot point (r) in meters.

Click "Calculate" — the torque will instantly appear in Newton-meters (N·m)

Formula Details

Torque (τ) = r × F × sin(θ)

Here, r = distance from the pivot,

F = applied force,

θ = angle between the force and the lever arm.

Practical Context

Torque calculation is essential in automotive engineering (engine torque ratings), mechanical design (bolt tightening specifications), and everyday tools like wrenches. Understanding torque helps engineers determine how much rotational force a component can safely withstand before failure.

Frequently Asked Questions (FAQs)

Q1: What is the difference between torque and force?

Force produces linear motion, whereas torque produces rotational motion around a pivot point—torque depends on both the applied force and the distance from the pivot.

Q2: What is the SI unit for torque?

The SI unit for torque is the Newton-meter (N·m). In imperial units, it is often expressed as pound-feet (lb-ft).

Q3: Why does the angle matter in torque calculation?

Only the component of the force perpendicular to the lever arm contributes to rotation—which is why sin(θ) is included in the formula. At 90°, sin(θ) equals 1, resulting in maximum torque for a given force and distance.