CNC Machining Calculators

Speeds, feeds, and material calculations in one place.

RPM Calculator
Material Weight Calculator
Rectangle to Circle Calculator
Circle to Square Calculator
Feed Rate Calculator
Surface Finish Calculator
Cutting Speed Calculator
Tap Drill Size Calculator
Hardness Converter
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Built for Machinists. Designed for the Shop Floor.
Professional CNC calculators, GD&T tools, and machining utilities for real-world manufacturing applications.