Tip Speed Calculator Tip Speed Calculator Diameter: Diameter Unit: Meters (m) Centimeters (cm) Millimeters (mm) Feet (ft) Inches (in) RPM (revolutions/min): Output Unit: Meters per Second (m/s) Feet per Minute (ft/min) Feet per Second (ft/s) Kilometers per Hour (km/h) Miles per Hour (mph) Calculate Tip Speed