Belt Length Calculator Belt Length Calculator Belt Length Calculator Diameter of Larger Pulley (D): meters (m) millimeters (mm) centimeters (cm) feet (ft) inches (in) Diameter of Smaller Pulley (d): meters (m) millimeters (mm) centimeters (cm) feet (ft) inches (in) Center Distance Between Pulleys (L): meters (m) millimeters (mm) centimeters (cm) feet (ft) inches (in) Calculate Belt Length