Mechanical

Gear Ratio Calculator

Use this gear ratio calculator to calculate calculate gear ratio from driven and driver gear teeth.

gear ratiogearsteethmechanical

Calculator

Calculate instantly

Calculator Inputs

Choose what you want to calculate, enter realistic values, adjust units where shown, and use the scenario section for repeated-use planning.

Driven gear teeth0240

Driver gear teeth080

Input and Formula Breakdown

This calculator applies the formula Gear ratio = Driven teeth / Driver teeth. Enter each value with the matching unit, and AZCalculate updates the result instantly.

Driven gear teeth

Driver gear teeth

Gear ratio

3 :1

Scenario and Comparison

Usage counttimesComparison adjustment%

Current

3 :1

Projected

Adjusted

3.3

Visual Comparison

Current result3

Projected usage36

Comparison scenario3.3

Formula Explanation

Gear ratio = Driven teeth / Driver teeth

This calculator applies the formula Gear ratio = Driven teeth / Driver teeth. Enter each value with the matching unit, and AZCalculate updates the result instantly.

Use Cases

Design gear trains
Compare ratios
Plan mechanical systems

Step-by-Step Explanation

Step 1Enter the known values in the calculator fields.
Step 2Keep the units consistent with the labels shown beside each input.
Step 3Apply the formula: Gear ratio = Driven teeth / Driver teeth.
Step 4Review the primary result and supporting values.

Example calculation

Example gear ratio calculator

Given

Driven gear teeth: 48
Driver gear teeth: 16

Steps

Use the values shown above.
Apply Gear ratio = Driven teeth / Driver teeth.

Result

The calculator above shows the computed answer instantly from these example values.

Calculator guide

About this Gear Ratio Calculator

Calculate gear ratio from driven and driver gear teeth. This page includes an interactive calculator, concise formula notes, worked examples, FAQs, related calculators, and practical guidance you can revisit whenever needed.

gear ratio gears teeth mechanical

Found something that does not look right?

We work hard to keep every calculator accurate and useful. If you notice a calculation error, missing option, or unclear explanation, please let us know so we can review and correct it promptly.

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Calculator usage

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Most active date

2026-06-05

FAQ