# Gear Ratio Calculator

## Gear Ratio

A gear ratio calculator is a tool that helps you determine the relationship between the number of teeth on two gears in a gear train or gear system. Gear ratio refers to the ratio of teeth on the driven gear to the number of teeth on the driving gear. It is an essential aspect of gear design and can be used to calculate the speed, torque, and power of a gear system.

A gear ratio calculator typically takes input values such as the number of teeth on the driving and driven gears and calculates the gear ratio automatically. Some advanced gear ratio calculators may also allow you to input additional parameters such as gear pitch diameter, module, and pressure angle to calculate more complex gear ratios.

Gear ratio calculators are useful in many applications, including automotive and industrial engineering, robotics, and even in everyday items such as bicycles. They can help designers and engineers optimize gear systems for maximum efficiency and performance.

## How to Calculate Gear Ratio

The gear ratio is the ratio of the number of teeth on the driven gear to the number of teeth on the driving gear. To calculate the gear ratio, you need to follow these steps:

1. Count the number of teeth on the driving gear (the gear that is providing the power).

2. Count the number of teeth on the driven gear (the gear that is receiving the power).

3. Divide the number of teeth on the driven gear by the number of teeth on the driving gear.

Gear Ratio = Number of Teeth on Driven Gear / Number of Teeth on Driving Gear

For example, let's say you have a driving gear with 20 teeth and a driven gear with 40 teeth. The gear ratio would be:

Gear Ratio = 40/20 = 2

This means that the driven gear will rotate twice for every rotation of the driving gear.