Turning Formula Interactive Calculator Surface Feet/Meter Per Minute (SFM/SMM) RPM Diameter Type Feet Meter Answer Revolutions Per Minute (RPM) SFM/SMM Diameter Type Feet Meter Answer Inches/Millimeters Per Revolution Feed Rate (IPR/mmPR) IPM/mmPM RPM Type Inches Millimeter Answer Inches/Millimeters Per Minute Feed Rate (IPM/mmPM) RPM IPR/mmPR Type Inches Millimeter Answer Cubic Inches Per Minute Metal Removal Rate(in3/min) SFM IPR DOC Answer Cubic Centimeters Per Minute Metal Removal Rate (cm3/min) SMM cmPR DOC Answer