CNC Assist: Speeds & Feeds

Speeds and feeds calculator, G-code analyzer, and 270+ CNC alarm codes for Haas, Fanuc and Siemens Sinumerik. Free, works offline, no ads.

CNC Assist is a practical toolkit for CNC machine operators, programmers, setters and machining students. Calculate cutting parameters, check a G-code program, look up an alarm, and get clear answers to machining questions — all in one app.

SPEEDS AND FEEDS CALCULATOR
• Milling, turning and drilling cutting parameters
• Spindle speed (RPM), feed rate, chip load and material removal rate
• Carbide and HSS tooling, roughing and finishing
• Built-in material database with cutting speed (Vc / SFM) data
• Metric and imperial units

G-CODE ANALYZER
• Paste or open a program to find errors and warnings before you run it
• Haas, Siemens Sinumerik and generic ISO dialects
• Automatic controller detection
• Line-by-line view with a clear summary

CNC ALARM CODES AND G-CODE REFERENCE
• 270+ alarm codes for Haas, Fanuc and Siemens Sinumerik controllers
• 250+ G-codes, M-codes and Sinumerik cycles explained
• What the alarm means, the likely causes, and the first steps to fix it
• Works without an internet connection

AI MACHINING ASSISTANT
• Ask machining questions in plain language and get practical answers
• Photograph a part, a drawing or an alarm screen and get it explained
• CNC guides and a library of example G-code programs

MORE SHOP TOOLS
• Taper, arc, weight, hardness, true position and tool wear calculators
• Unit converters, a G-code generator and a practice quiz
• Save your calculations and analyses for later
• English, Romanian, Persian and Arabic

WHO IT IS FOR
CNC milling and turning operators, CNC programmers, machine setters, apprentices and machining students — on Haas, Fanuc, Siemens Sinumerik and Heidenhain machines.

No ads, ever. The calculators, the G-code analyzer and the alarm and G-code reference are free. Some advanced AI features may require a subscription.

CNC Assist is a productivity aid. Always verify cutting parameters and programs against your own machine, tooling and material before running.