Simple Round Belt Calculator

Use this calculator to calculate the length to cut your round belt for welding. As long as your units of measure are consistent this should work for metric or imperial.

Round Belt Calculator Diagram

BL – Belt Length

C – Pulley Center-to-Center Distance

D1 – Pulley 1 Diameter

D2 – Pulley 2 Diameter

Diameter of where belt rests
Diameter of where belt rests
Center distance between the two pulleys
Account for the weld shortening or extra slack
Cut belt to this length