CNC Speeds & Feeds Calculator

Speeds and feeds calculator: RPM, chip load, tap drill sizes and bolt circle

Work out speeds and feeds for milling without digging through handbooks. Choose the workpiece material and whether the cutter is HSS or carbide, and the calculator returns spindle RPM and feed rate in in/min or mm/min. The same app also handles tap drill sizes, bolt circle coordinates, taper angles, turning surface finish and a set of shop reference charts.SPEEDS AND FEEDS• 8 materials: aluminum, brass, mild steel, …