Piston Speed Calculator Required Data Entry Engine Stroke MM Inches Engine RPM x1 Calculated Results Piston Speed FPM Feet Per Minute Piston Speed FPS Feet Per Second Piston Speed Rounded FPM Feet Per Minute Piston Speed Rounded FPS Feet Per Second Piston Speed MPM Meters Per Minute Piston Speed MPS Meters Per Second Piston Speed Rounded MPM Meters Per Minute Piston Speed Rounded MPS Meters Per Second