Belt Calculator: V-Belt Length

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 and speed ratio 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 KEY FEATURES: - Two-pulley open drive geometry, valid for V-belt or flat belt - Quick-pick presets for common pulley pairs (8 SAE, 8 metric) - 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.