CNC Machinist Calculator
Vladislav Zhirnov · Utilities
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What changed · US
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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.
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About
CNC Machinist Calculator — speeds & feeds, power, fits, tool life and G-code in your pocket. Works offline. Enter a tool and a material and get spindle RPM, feed rate, cut time and machine power in one second — metric or inch, with the formula and its source shown under every result. Free, no limits, no ads Milling, Drilling and Turning Speed & Feed Drill size and tap drill charts (letter, number, metric, fractional) G- and M-code reference with examples Pro — 7-day free trial on the yearly plan Milling, Drilling and Turning Power & Torque (MRR, kW/hp, N·m) Tolerance & Fit — ISO 286 limits and deviations from the standard tables, with inch display per ANSI B4.2 Turning Surface Roughness, Thread Milling with centre-line feed compensation Tool Life (Taylor), Coolant Flow & Nozzle, Ball-nose Step-over Chip Load & Deflection — HSM chip thinning, cutting forces, bending stress, chatter risk Cycle Time & Cost — cost per part from cutting time, setup, batch size, tool cost and shop rate G-code generators: bolt circle, grid, linear pattern, 3-point arc — safe Fanuc-style header, Z clearance, G81/G82/G83 Machine profile — results capped to your spindle's RPM, power and feed Tool library and your own materials with personal Vc, fz and kc Setup-sheet history, export to CSV and PDF Materials done properly 38 workpiece materials in ISO groups P/M/K/N/S/H — steels, stainless, cast iron, aluminium, brass, plastics, titanium, Inconel, hardened steel — each with separate starting values for HSS and carbide, specific cutting force kc, and coating factors (TiN, TiCN, TiAlN, AlCrN, DLC) with warnings when a coating does not suit the material. Built on real formulas Machinery's Handbook speeds and feeds, ISO 286-1/2 tolerance tables, ISO 68-1 thread geometry, Qu & Shih circular-cusp Ra, Taylor tool life, Bernoulli nozzle flow. The engine is covered by 200+ automated tests. Catalogue values are starting points — always confirm with your insert maker's data. Pricing Pro Monthly $1.99/month, Pro Yearly $7.99/year, or Lifetime $14.99 one-time. Subscriptions are charged to your Apple ID and renew automatically unless cancelled at least 24 hours before the end of the current period; manage them in Settings. Existing Remove Ads buyers keep full Pro. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.freeprivacypolicy.com/live/a849d8e9-1345-4ba8-a196-7cb1d4065a55
What's new · 9
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.
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