CNC Machinist Calculator Ultra
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The shop-floor calculator for CNC machinists, programmers and toolmakers. Work out spindle speeds and feed rates, find the right tap drill, look up thread and fit data, and check G-codes, in inch or metric.
Guides and quick references
- Milling speeds and feeds calculator: RPM, feed rate, chip thinning and metal removal rate
- Lathe speeds and feeds: turning RPM, feed per revolution and cut time
- Tap drill chart: inch and metric tap drills and percent of thread
- Thread calculator: pitch diameter, thread wires and thread standards
- ISO fit tolerance calculator: hole and shaft fits such as H7/g6 and H7/p6
- Machining chatter: find a stable spindle speed from the chatter sound
- G-code and M-code list for CNC mills and lathes
- G-codes by control and M-codes by control: Fanuc, Haas, Mazak, Okuma, Siemens, Heidenhain and more
What's in the app
- Milling: spindle speed, SFM, feed rate, radial chip thinning, ball end mill effective diameter, cusp height, metal removal rate and horsepower, tool runout, slitting saws
- Turning: cutting speed, feed conversions, taper, boring bar deflection, rough pass and groove/cutoff cycle time, lathe cycle generator
- Drilling and tapping: tap drills, drill chart, center drills, reaming, gun drilling, G84 rigid tapping
- Threads: UN (UNC, UNF, UNEF, UNS, UNJ, UNM), metric M profile, ACME, Stub ACME, NPT, BSPP, Whitworth, STI and special threads, plus G76 threading
- Grinding: wheel and workpiece speed, plunge and surface grinding, grit size conversion
- Inspection: ISO fit tolerances, true position, GD&T learning center, gauge block stacks, surface finish, hardness conversion, thermal expansion
- Shop math: bolt circles, triangles, arcs, geometry, unit conversions, material weight and properties, splines and gears
- G-code and M-code reference, G-code simulator, custom macro help, community cut library and a chatter listener