Belt Sprocket Conversion Calculator

Belt Conversion Parameters

Existing Belt

Existing Belt Description

Existing Belt Sprocket Teeth

Count the teeth on the belt sprocket, not the chain transmission sprocket.

Existing Belt Pitch

Enter the actual longitudinal drive pitch.

Existing Belt Speed (optional)

New Belt

New Belt Description

New Belt Pitch

Acceptable Speed Error (%)

Comparison Range

Number of tooth counts shown above and below the ideal result.

Results

Original Travel per Revolution —

Ideal New Tooth Count —

Recommended Whole-Number Tooth Count —

New Travel per Revolution —

Relative Belt Speed —

Resulting Belt Speed —

Speed Error —

Recommendation —

Whole-Number Tooth Comparison

Teeth	Travel / Rev	Relative Speed	Speed Error	Evaluation

Optional Drive Ratio Correction

Use this section when the selected whole-number belt sprocket produces more speed error than acceptable.

Selected New Belt Sprocket Teeth

Correction Method

Engineering notice: This calculator preserves theoretical linear belt travel per drive-shaft revolution. Final sprocket design must also consider tooth geometry, belt engagement, polygonal action, shaft torque, space limitations, manufacturer requirements, and machine safety.