Milling Formula Interactive Calculator
Solve for any subject variable in bold by entering values in the boxes on the left side of the equation and clicking the "Calculate" button. The solution will appear in the box on the right side of the equation. To enter a value, click inside the boxes containing the "Enter" prompts.
 
Legend:
D - Cutter diameter (inches) Z - Number of teeth in cutter
DOC - Depth of cut (inches) WOC - Width of cut (in inches)
SURFACE FEET PER  MINUTE (SFM)
Enter RPM Enter D
X X /12 =
REVOLUTIONS PER MINUTE (RPM)
Enter SFM Enter D
X (12/ ) / =
INCHES PER REVOLUTION FEED RATE (IPR)
Enter IPM Enter RPM
/ =
INCHES PER MINUTE FEED RATE (IPM)
Enter RPM Enter IPT Enter Z
X X =
INCHES PER TOOTH FEED RATE (IPT)
Enter IPM Enter RPM Enter Z
/ / =
CUBIC INCHES PER MINUTE METAL REMOVAL RATE (in³/min)
Enter RPM Enter DOC Enter WOC Enter IPT Enter Z
X X X X =