JavaScript is off. Reference tables, cheat sheets and guides below are fully readable. The calculators, search and navigation need JavaScript — everything still runs in your browser, nothing is sent anywhere. Browse all tools

Feeds & Speeds

RPM = 1000·Vc/(π·D) [metric] or 12·SFM/(π·D) [imperial]; feed = RPM · chip load · flutes.

Calculator

Units

Cutting speed Vc (m/min)

Tool Ø (mm)

Flutes

Chip load (mm/tooth)

Width of cut ae

Depth of cut ap

Spindle speed

—

Feed rate

—

MRR

—

Starting points — trust your tooling supplier's data. A helper, not a substitute for engineering judgment.