Feed Rate Calculator
IPM / RPM = FPR

Enter your feed rate and spindle speed to instantly calculate feed per revolution for turning, drilling, boring, and tapping operations.

This tool eliminates guesswork, helping optimize machining parameters to prevent tool wear, reduce cycle time, and enhance machining accuracy.

Please enter valid positive values for all fields.
Feed Per Revolution (FPR) — inches per revolution
Abbreviation Meaning
IPMInches Per Minute
RPMRevolutions Per Minute
FPRFeed Per Revolution

Ideal for CNC programmers, machinists, and manufacturing engineers, this tool helps in:

  • Selecting appropriate feed rates
  • Avoiding excessive tool wear
  • Improving machining efficiency and accuracy

Using a Feed per Revolution calculator allows machinists and programmers to:

  • Protect tools
  • Improve finish
  • Boost productivity
  • Reduce downtime
  • Program CNC machines more precisely