Machinist Calc Pro -- Advanced Machining Math Calculator and Reference Tool for Machinists, Machine Setters, Tool and Die Makers, Production Engineers, Shop Managers and Owners Utilities App Review (iOS, $19.99)


Languages: English

Seller: Calculated Industries, Inc.

iOS 7 updates.

Customer Ratings

Current Version:
1 Ratings
All Versions:
5 Ratings


Ideal for machining pros and shop owners who want to increase productivity and profits in the design, layout and set-up stages of production and reduce wear and tear on costly cutting tools.

The Machinist Calc Pro is the first machining math and reference tool to provide a complete assortment of machine shop solutions. It has more complete Thread data than the Machinery's Handbook, including step-saving Thread and Drill Size chart look-ups, speeds and feeds, right triangle solutions, bolt patterns and much more.

Spend more time machining and less time looking up specs and data in books, on charts or in computer programs.

• Created by Calculated Industries, the originator of the award-winning Construction Master calculators
• Built-in help, just press and hold a key
• All the functionality and solutions of the handheld Machinist Calc Pro calculators and optimized for the iPhone device user
• Entry Editing Backspace Key – with a swipe of a finger (left - to - right)
• A complete User’s Guide is available free at

• Speeds and Feeds - Calculate for Milling, Turning and Drilling; Spindle Speed (RPM), Feed Rate (IPM), Cut Speed, Cut Feed, Feed per Tooth, Number of Teeth and Radial Chip Thinning adjustment factor
• Thread Size - Enter numeric, fractional or metric thread sizes and display tap, roll tap, close and free fit drill sizes. Display pitch, major and minor diameters
• Drill Point - Enter the cutting angle and Drill Size and calculate the Drill Point cut depth
• Drill Size - Enter numeric, letter, fractional or metric Drill Size and display the closest fitting Drill Size and scroll through available drill sizes
• 3-Wire Measure - Enter Wire Size (or use calculated Best Wire size) and 3-Wire Measurement to calculate pitch diameter
• Trigonometric Functions - Sine, Cosine, Tangent, Arcsine, Arccosine, Arctangent
• Right Triangle Math - Enter, calculate Angle, Hypotenuse, Opposite and Adjacent side lengths

Additional Features:
• Thread Classification Tables
- Internal (3) 1B, 2B, 3B
- External (3) 1A, 2A, 3A
- Internal (14) 3G-9G and 3H-9H
- External (28) 3g-9g, 3h-9h, 3e-9e, 3f-9f
• U.S. and Metric Unit Entries and Conversions
◦Decimal Inches/mils
◦m, mm, cm
◦Area, Volume and Weight
• Works as a Standard Calculator

Machinist Calc® is a registered trademark of Calculated Industries, Inc.

Customer Reviews

  • Fast, accurate, easy to use

    by Cumminalong

    Use this app almost every day and it's an absolute time saver. All common operations for a manual machinist are included and easy to use. Trig functions, circles and bolt patterns, speeds & feeds, english/ metric's all there. If you're a student or experienced machinist, this app WILL make your day easier. You can either spend the $70 or so on the stand alone calculator or $20 on the app.......kind of a no brainer to me. This app has paid for itself many times over, there are few that actually so that.

  • It's the best!!!

    by tipspeed

    I have the actual calculator also. This is great when I'm not at the shop. Just hold down a button on this one and the help is right there for a quick reminder. Best machinist calc out there! Thanks for bringing it to the iPhone.

  • Great App!

    by Farrellsm77

    I happen to own the actual calculator and use that when working in the shop. I love the app version to use in class! The app has all the same features as the calculator! Calculated Industries had excellent customer service!!!

  • Not Working with iPad

    by AcolyteLR

    Purchased the app to show students an alternative to the handheld calculator and because "Details" stated it is compatible with the iPad. Installed it but am only getting a partial screen of the graphical user interface of the calculator. Hope they fix it soon!

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