Calculate milling RPM and feed rate from cutting speed, tool diameter, flute count and chip load.
Using the calculator
Enter values that match the tool, material and operation. Check the unit beside each field before calculating.
Calculation
Use this for a clear starting calculation. Tool geometry and material affect the final selection.
Reading the result
The result follows the relationship shown on this page. Final shop settings also depend on material, tool geometry, workholding, machine capability, coolant and the actual cut.
Worked example
For example, 250 m/min, 10 mm diameter, 4 flutes and 0.05 mm/tooth produce about 7,958 RPM and 1,592 mm/min feed.