This Speeds/Feeds Conversions calculator converts different expressions of speeds and feeds to other units of measure.

Enter two or three input values in the appropriate left input fields, click "Calculate," and see the converted value on the right.

• SFM = Surface Feet per Minute
• RPM = Revolutions Per Minute
• IPT = Inches Per Tooth
• IPM = Inches Per Minute
• IPR = Inches Per Revolution

Speeds/feeds conversion formulas are courtesy of Iscar Metals Inc., Arlington, TX.