Machinist Calc: CNC Tools

Machinist Calc turns common shop math into clear, practical answers. Enter the values from your tool, machine, or drawing and get results with units, assumptions, and calculation notes.

FREE TOOLS
• Speeds & Feeds — recommended spindle speed and feed rate by material and cutter
• Bolt Circle — X/Y coordinates for evenly spaced holes
• Convert — inch, millimeter, SFM, IPM, and nearest-fraction conversions

MACHINIST CALC PRO
• Tap Drill Size and Thread Engagement
• UNC, UNF, and metric tap drill and thread charts
• Sine Bar and Taper calculators
• True Position with MMC bonus tolerance

BUILT FOR THE SHOP
• Works offline after installation
• Clear inch and metric inputs
• No ads
• Calculation notes explain how each result was obtained

Machinist Calc provides reference calculations. Always verify results against your machine, tooling, material, drawing, and applicable standards before cutting or inspecting a part.

Machinist Calc Pro is available as an auto-renewing monthly or annual subscription. Eligible customers can start with a 14-day free trial. Manage or cancel your subscription in Google Play.