# Machinist Calc Pro 2 — Machining Math Calculator

> Machining speed and feed calculator with material, tool, and process settings. (iPhone/iPad app by Calculated Industries.)

- Source: https://appshunter.io/ios/app/machinist-calc-pro-2/id953541152 (this page in markdown: same URL + `.md`)
- Developer: [Calculated Industries](https://appshunter.io/developer/370406449)
- Category: Utilities
- Price: $29.99
- Rating: 4.40/5 from 5 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 11.0 · 25 MB
- Languages: American English
- Released: 2015-01-15
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/machinist-calc-pro-2/id953541152/reviews.md

## What is Machinist Calc Pro 2?

The Machinist Calc Pro 2 now includes materials and tool settings combined with DOC and WOC to solve all your speed and feed calculations for face, end or slot milling plus turning, drilling and boring. It also gives you step-saving drill and thread chart look-ups, right triangle solutions and bolt-circle patterns.

And while perhaps obvious, if you change from an iOS device to a non-iOS device, you WILL need to buy a new license as they are incompatible.

FEATURES:
• 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 2 calculator and optimized for the iPhone and/or iPad device user
• Entry Editing Backspace Key – with a swipe of a finger (left - to - right)
• A complete User’s Guide is available free at www.calculated.com

FUNCTIONS AND CALCULATIONS:  
• NEW - Machining-specific keys to enter or calculate Surface Feet per Minute (SFM), Inches per Tooth (IPT), Inches per Minute (IPM), Inches per Revolution (IPR), # of Teeth, Depth of Cut (DOC), Width of Cut (WOC) and Length of Cut (LOC)
• NEW - Materials - Choose from 20 popular Materials
• NEW - Processes - Face Milling, End Milling, Slot Milling, Turning, Boring, Drilling
• NEW - Tools - High Speed, Carbide and High Performance
• Speeds and Feeds - calculate for milling, turning and drilling; cutting speed, spindle speed (RPM), feed rate (IPM), cutting feed, feed per tooth/chip load, number of Teeth and Radial Chip Thinning adjustment factor
• Built-in Drill and Thread Size Tables save time and steps (Compliant with ANSI/ASME B1.1-2003 and ANSI/ASME B1.13M-2005)
• Enter Numeric, Fractional, Metric Thread Sizes and Drill Sizes - and display tap, roll tap, close and free fit drill sizes plus pitch, major and minor diameters
• Right Triangle Math - plus trigonometric functions
• Drill Points - enter the cutting angle and drill size to calculate the drill point cut depth
• Bolt Pattern Layouts - enter start angle, number of bolts, diameter and optional x, y offset; calculate x and y coordinates. Find center-to-center spacing for bolt pattern layouts
• 3-Wire Measure - enter Wire Size (or use calculated Best Wire size) and 3-Wire Measurement to calculate pitch diameter

ADDITIONAL FEATURES:
• Thread Classification Tables 
◦ U.S. 
- Internal (3) 1B, 2B, 3B 
- External (3) 1A, 2A, 3A
◦ Metric 
- 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
◦ Feet-Inch-Fractions
◦ m, mm, cm
◦ Area, Volume and Weight
• Works as a Standard Calculator

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

## Key features

- Speed and feed calculations for milling, turning, drilling, boring
- Material and tool setting selection
- Built-in drill and thread chart look-ups
- Right triangle math and trigonometric functions
- Bolt-circle pattern layouts
- 3-Wire measurement calculations
- U.S. and Metric unit conversions

## Chart rankings

- #164 in Top Paid · Utilities (US App Store)

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/machinist-calc-pro-2/id953541152/reviews.md

### 3/5 — Rct

*2023-02-10*

Why isn’t it available on the app ? It’s on updated calculator . I bought new calculator for the feature and didn’t even have it , must have gotten new old stock , so I came here thinking the latest update would come in a soft version of calculator. 
Awesome calculator, just wish there was a way to get the new calculator with updated features or even update the physical calculator. Please add Rct to the app please or a workaround. Thank you

## Frequently asked questions about Machinist Calc Pro 2

### What machining processes does Machinist Calc Pro 2 support?

Machinist Calc Pro 2 supports face milling, end milling, slot milling, turning, boring, and drilling. It calculates speeds and feeds for these processes, considering material, tool, and cut depth/width.

### How does Machinist Calc Pro 2 handle different materials and tools?

The app allows you to choose from 20 popular materials and select tool types such as High Speed, Carbide, and High Performance. This ensures accurate calculations tailored to your specific setup.

### Does Machinist Calc Pro 2 include drill and thread information?

Yes, it features built-in drill and thread size tables for quick look-ups. You can enter numeric, fractional, or metric thread and drill sizes to find tap, roll tap, and drill sizes, along with pitch and diameters.

### Can Machinist Calc Pro 2 help with bolt pattern calculations?

Absolutely. You can enter the start angle, number of bolts, and diameter to calculate the x and y coordinates for bolt pattern layouts. It also finds center-to-center spacing.

### What is the price of Machinist Calc Pro 2?

Machinist Calc Pro 2 is a paid application priced at $29.99. This is a one-time purchase for the app.

### Is Machinist Calc Pro 2 available on Android devices?

No, Machinist Calc Pro 2 is currently only available for iOS devices, including iPhone and iPad. A license purchased on iOS is not transferable to non-iOS devices.

### How often is Machinist Calc Pro 2 updated?

The latest version, 10.2.1, was released on June 20, 2019. While the app has not been updated recently, it offers a comprehensive set of features for machinists.

### Does Machinist Calc Pro 2 have ads?

No, Machinist Calc Pro 2 does not contain advertisements. It is a paid application designed for professional use without interruptions.

## Version history (last 5 releases)

### 10.2.3 — 2026-07-13

Maintenance updates.

### 10.2.1 — 2019-06-20

Bug fix (key id assignment) for X devices.

### 10.2.0 — 2019-06-19

New menu/navigation, Factory Reset moved to Preferences, new "What's New" one-time automatic view on first launch of new install or first launch after an update and some bug fixes.

### 1.0.2 — 2016-05-05

Revision to DOC handling.

### 1.0.1 — 2015-10-02

Change to app data storage routine.

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All apps by Calculated Industries: https://appshunter.io/developer/370406449

## Related topics

[machinist calculator](https://appshunter.io/ios/topics/machinist-calculator) · [machining material calculators](https://appshunter.io/ios/topics/machining-material-calculators)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*