Web Machinist has many calculators for CNC Machinists, Programmers and QC Inspectors.
Including Calculators for Angles, CNC Applications, Conversions, CNC Drilling, Machining Formulas, Hole Patterns, QC Inspection, Manual Machining, Metal Removal Rates, CNC Milling, Reference, Rotary Axis, Speeds & Feeds, Spur Gears, CNC Tapping, CNC Threading, Tooling & Hardware, Trigonometry & Geometry, CNC Turning and Miscellaneous Calculators.