Speeds & Feeds Calculator

RPM, feed, and MRR for turning, milling, and drilling — with conservative starting-point data by material class.

Material & tool

Material class Tool material

Workpiece dia (in) Surface speed (SFM) Spindle (RPM) linked — edit either one

Feed (IPR) Depth of cut (in) per side (radial) Nose radius (in) optional for theoretical finish