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Belt Length Calculator

Belt Length Calculator

Estimate timing belt pitch length, belt teeth count, pulley pitch diameters, center distance, speed rate, and teeth in mesh for open synchronous belt drives.

Drive Inputs

Enter pulley teeth, pitch, width, and desired center distance.

Measurement
Pitch is the distance from one belt tooth to the next.
Pulley tooth selections update to the standard catalog sizes for the selected tooth style.
Choose a standard width in inches.
Distance in inches.

Results

Use these outputs to select an appropriate belt and pulley combination.

Speed Rate—
Pitch Diameter - Large Pulley (A)—
Pitch Diameter - Small Pulley (B)—
Desired Belt Pitch Length—
Belt Pitch Length—
Number of Teeth - Belt—
Center Distance Using Belt—
Teeth in Mesh—

Purchase Selected Belts and Pulleys

Belt TargetCalculate first—View Belts
Large Pulley TargetCalculate first—View Pulley
Small Pulley TargetCalculate first—View Pulley

Note: This calculator is intended for preliminary sizing. Final drive selection should account for load, speed, horsepower, belt type, manufacturer recommendations, and application conditions.