CNC Calculators

Start with Feeds & Speeds — RPM and feed rate are the two most consequential numbers on any cutting operation. Once you’re comfortable there, move on to Cutting & Tooling for chip load and depth of cut, then Tool Path & CAM for step-over, engagement, and trochoidal math.

Most calculators will accept both and let you switch on the fly. The Conversion category covers the in-between cases — SFM to m/min, fractional drills to decimal, kg/mm³ to lb/in³, and the rest of the bilingual numbers a typical shop runs into.

Treat any calculated value as a starting point. Manufacturer-recommended SFM and chip loads vary by coating, coolant flow, and machine rigidity — always sanity-check against the tool maker’s data and dial in via cut tests before sending production parts.

The CNC section is in active development. The category pages exist as placeholders for navigation and SEO; individual calculators are being built one at a time. Feeds & Speeds and Cutting & Tooling are next in line.

Yes — if there’s a specific calculation you reach for often (or a niche one you can’t find anywhere else), the request queue is open. Higher-vote ideas tend to ship first.