V-Belt Length Calculator

Need the exact belt length for a two-pulley drive but hate digging through engineering tables? Tired of ordering the wrong V-belt size and waiting for a replacement? This calculator gives you the answer in seconds. Enter your pulley diameters and center distance, get the belt length instantly. Also calculates wrap angle, speed ratio, and belt speed for proper drive design. WHAT IT CALCULATES: - Belt length from pulley diameters and center distance - Wrap angle on each sheave - Speed ratio between driver and driven - Belt linear speed - Center distance from known belt length KEY FEATURES: - Two-pulley V-belt and flat belt support - Reverse calculation (center distance from belt length) - Metric and imperial units - Works completely offline - No account or login required Built for maintenance techs, millwrights, HVAC technicians, and mechanical engineers working with belt-driven equipment.