CNC Machinist Calculator

This is the biggest update since launch. Ads are gone for good, and every formula has been re-checked against the handbooks. NEW Cycle Time & Cost — cost per part from cutting time, setup, batch size, tool cost and your shop rate Materials rebuilt: 38 alloys in ISO groups P/M/K/N/S/H, with separate starting values for HSS and carbide, kc, and coating factors (TiN, TiCN, TiAlN, AlCrN, DLC) that warn when a coating doesn't suit the material My Materials — add your own alloys with personal Vc, fz and kc; they appear in every calculator Tolerance & Fit now shows ISO 286 fits in inches (ANSI B4.2) Machine profile caps RPM, power and feed to your spindle; tool library drops your end mills into any calculator in one tap Setup-sheet history with CSV / PDF export Formula and source shown under every result FIXED Drilling RPM, ball-nose step-over, tap chart output and ISO 286 deviations were wrong in earlier versions — all corrected and covered by 200+ automated tests Tolerances no longer print "inf" on an empty field PDF sharing of saved results works again Thread Milling and Tool Life now tell you why a result is missing instead of staying blank Keyboard "Done" button works on every field Full Dark Mode support Translations completed for all 32 languages PRICING No more ads. Speed & Feed for milling, drilling and turning, drill and tap charts and the G-code reference are free with no limits. Everything else is Pro: monthly, yearly, or a one-time Lifetime purchase. If you bought Remove Ads before, you already have full Pro — tap Restore Purchases.