Free. No account. No paywall.
Pick your machine, router, bit, and material. Get RPM, feed rate, depth of cut, and chipload back instantly.
Machine data for
Bit data for
Machine, router, bit, material in. A full recommendation out, with a slider to dial conservative to aggressive.
Drop in a G-code or Carbide Create file. See every toolpath, feed rate, and depth at a glance, before the cut.
Drop two files in. See exactly what's different: feeds, depths, operations, no CAM program required.
59 machines, 290 bits, 48 materials. Specs, compatible routers, and the source behind every number.
Star what you run so the calculator opens ready to go. Add custom bits that aren't in the built-in library.
Not just another feeds & speeds calculator
Feed rate is derived from chipload, flute count, and RPM, the same relationship a machinist works from by hand. Chip-thinning and DOC-to-chipload coupling run on top, so the output adjusts itself when depth changes.
Chipload ranges come from manufacturer databases (Amana, Whiteside, Freud), published bit charts, and the Carbide 3D and IDC Woodcraft spreadsheets hobbyists have traded and corrected for years. Every row cites its source.
A spec sheet says what a bit can cut in theory. It doesn't say a belt-drive router hits a feed ceiling below its stepper limit. Those caps come from forum-reported cuts and real machine behavior.
No signup, nothing to install. Pick your machine and see what it gives you. Feedback on what's off or missing is exactly what makes the data better.