CNC Calculator Machinist Lathe

Need fast answers on the shop floor? CNC Calculator puts thread pitch, tolerance fits, cutting speed, feed rate, taper, hole coordinates, and material weight at your fingertips—built for lathe and mill operators. From ISO thread tables to macro and groove program helpers, every tool is designed for real machining work. Save favorites, review calculation history, and export or import your data. Works fully offline—no account, no cloud upload. • Thread calc: metric & imperial pitch, tap drill • Tolerance lookup: hole/shaft fit grades • Speed & feed: SFM, RPM, chip load • Taper, chamfer, hole position, polygon • Macro & groove program generation • Weight, roughness, triangle & arc tools • Favorites, history, data export/import Essential for CNC machinists, toolmakers, and mechanical engineers who want a reliable pocket reference on the machine.