Relação Engrenagem

i = Z₂/Z₁.
Created by
Renato Passos, Eng. de Software
Reviewed by
Renato Passos, Eng. de Software

Last updated: Apr 18, 2026

i
3,00

Formula

engrenagem

About this calculator

The Gear Ratio Calculator is a useful tool for engineers and physics students who need to calculate the gear ratio between two gears. It is based on the simple, but fundamental, formula of i = Z2/Z1, where i is the gear ratio, Z2 is the number of teeth on the second gear and Z1 is the number of teeth on the first gear.

The gear ratio is crucial in many applications, from simple machines to complex industries. With this calculator, you can quickly determine the gear ratio between two gears and avoid calculation errors.

Here are some practical use cases for the gear ratio calculator: when designing a simple machine, such as a bicycle or a washing machine, or in more complex applications, such as a power plant or a food processing factory.

Remember that choosing the correct gear ratio can significantly affect the efficiency and durability of your project. Use this tool with care and attention to details to ensure accurate results.

Frequently asked questions

What is the gear ratio formula?

The gear ratio formula is i = Z2/Z1, where i is the gear ratio, Z2 is the number of teeth on the second gear and Z1 is the number of teeth on the first gear.

When to use the gear ratio calculator?

Use the gear ratio calculator when you need to determine the gear ratio between two gears in simple or complex machine projects.

How to choose the correct gear ratio?

Choose the correct gear ratio considering the efficiency and durability of your project.

What happens if I use an incorrect gear ratio?

An incorrect gear ratio can negatively affect the efficiency and durability of your project.

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