Pulley Calculator

Calculate pulley ratios and RPM

Pulley Details

in
in
RPM

2.00:1

Pulley Ratio

875

Driven RPM

1833

Belt Speed (ft/min)

Formulas

RPM₂ = (RPM₁ × D₁) / D₂

Belt Speed = π × D₁ × RPM₁ / 12