Gear Ratio Calculator

Calculate the gear ratio between a driving and driven gear based on their tooth counts, and the resulting output speed.

Inputs
Results
Gear Ratio
3
Output Speed
333.3 RPM

Try an example

Formula

Ratio = Driven Teeth / Driving Teeth, Output RPM = Input RPM / Ratio

Learn How This Works

Uniform Beam Loads, Capacitor Energy, and Gear Ratios Explained

Three more engineering formulas — uniform beam deflection, stored capacitor energy, and gear ratio speed conversion — worked through with real numbers.

Frequently Asked Questions

Related Calculators

Ohm's Law Calculator

Calculate voltage, current, or resistance using Ohm's Law.

Voltage Divider Calculator

Calculate output voltage of a two-resistor voltage divider circuit.

Electrical Power Calculator

Calculate electrical power from voltage and current.

Simply Supported Beam Deflection Calculator

Calculate maximum deflection of a simply supported beam under a center point load.

Capacitor Energy Calculator

Calculate the energy stored in a charged capacitor.

Torque Calculator

Calculate torque from force and lever arm length.