
CNC Machinist: Speeds & Feeds
Milling, Turning & Drilling
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About
CNC Machinist is the essential precision speeds and feeds calculator engineered for machinists, CNC programmers, operators, and toolmakers.
KEY FEATURES & CALCULATORS:
• Milling Calculations: Spindle Speed (RPM), Cutting Feed Rate, Tooth Load (chip load / fz), and Material Removal Rate (MRR).
• Turning (Lathe): Cutting Speed (Vc/SFM), Spindle RPM, and Feed per Revolution.
• Drilling & Tapping: Optimal drill speeds, feed rates, and comprehensive tap drill size charts (Metric ISO, UNC, UNF).
• Surface Finish: Precise theoretical surface roughness calculations (Ra & Rz) based on nose radius and feed.
• Unit Converter & Reference: Instant conversions between Metric (mm, m/min) and Imperial (inch, SFM) systems.
• 100% Offline: Engineered to run flawlessly on the shop floor without internet connectivity.
Optimize your machining cycles, extend tool life, and prevent broken cutters with CNC Machinist.
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What's New in CNC Machinist
2.5.15
October 16, 2026
New CNC calculations, performance improvements, and enhanced calculation precision.
3
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Weekly Premium
Weekly premium access to all features.
$0.997 Days






