Speeds and Feeds Calculator

Your details

Choose whether to enter dimensions in inches or millimetres.
Milling calculates feed rate (IPM). Drilling outputs feed per revolution. Turning outputs feed rate for the work surface.
Carbide can run at 2-5x higher surface speeds than HSS.
Select the material you are cutting to auto-fill recommended surface speed and chipload.
Outer diameter of the end mill, drill bit, or turning insert nose radius.
in
Number of cutting edges on the tool. Drilling uses 2 for a standard twist drill.
flutes
Surface feet per minute. Look up recommended values in the reference table below, or let the calculator suggest them by selecting a material.
SFM
Inches per tooth (IPT) - the thickness of each chip. Also called feed per tooth.
IPT
How deep the cutter goes in the Z direction (also called axial depth or pass depth). Used to calculate material removal rate.
in
Width of cut in the radial direction (stepover). Full slot = cutter diameter. Used to calculate MRR.
in
Spindle SpeedMid-speed range
5,348RPM

Recommended spindle speed in revolutions per minute

Feed Rate85.56
Feed Rate UnitsIPM
Chipload per Tooth0.008
Material Removal Rate10.695
MRR Unitsin³/min
Recommended Cutting Speed700 SFM (aluminum + carbide)
Recommended Chipload0.0080 IPT
Spindle RPM5,348
Feed Rate85.56
MRR10.695

Spindle: 5348 RPM - Feed rate: 85.6 IPM

  • At 5348 RPM and 85.6 IPM, the cutter advances 0.0080 in per tooth per revolution.
  • Your surface speed is within the recommended range for Aluminum / Aluminum Alloys with carbide tooling.
  • Material removal rate: 10.70 in³/min. Increasing radial or axial depth of cut raises MRR without changing RPM or surface quality.

Next stepAlways start at 50-70% of calculated feed rate for a first cut and increase in 10% increments until chatter or tool deflection appears.

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