CNC Machinist Calculator Pro icon

CNC Machinist Calculator Pro vVARY

CNC Machinist Calculator Pro screenshot 0 CNC Machinist Calculator Pro screenshot 1 CNC Machinist Calculator Pro screenshot 2 CNC Machinist Calculator Pro screenshot 3 CNC Machinist Calculator Pro screenshot 4 CNC Machinist Calculator Pro screenshot 5 CNC Machinist Calculator Pro screenshot 6 CNC Machinist Calculator Pro screenshot 7 CNC Machinist Calculator Pro screenshot 8 CNC Machinist Calculator Pro screenshot 9 CNC Machinist Calculator Pro screenshot 10 CNC Machinist Calculator Pro screenshot 11 CNC Machinist Calculator Pro screenshot 12 CNC Machinist Calculator Pro screenshot 13 CNC Machinist Calculator Pro screenshot 14 CNC Machinist Calculator Pro screenshot 15 CNC Machinist Calculator Pro screenshot 16 CNC Machinist Calculator Pro screenshot 17 CNC Machinist Calculator Pro screenshot 18 CNC Machinist Calculator Pro screenshot 19 CNC Machinist Calculator Pro screenshot 20 CNC Machinist Calculator Pro screenshot 21 CNC Machinist Calculator Pro screenshot 22 CNC Machinist Calculator Pro screenshot 23

About this app

Developer Description

We're working to become the best machining app on the market! www.cncdirt.com

Don't Leave "G28U0W0" Without it!

CNC Machinist Calculator Pro is a machining calculator designed for manufacturing engineers, machinists, CNC operators, tool & die makers, and at home hobbyists. CNC Machinist Calculator Pro is great for CNC programmers or machine operators who need to make quick calculations on the fly. It's also a great tool for quoting new work. Visit www.cncdirt.com for more info

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This CNC machining calculator app includes the following features:

1. Turning Calculators for lathe operators
*Cutting Speed Calculation by Material
*Grooving/Cut off cycle time Calculation
*Rough turn cycle time Calculation
*Cutting Speed Calculations
*Cutting speed to RPM conversions
*Feed per rev - Feed per minute conversions

2. Milling Calculators for mill operators
*Cutting Speed & Feed Calculation by Material
*RPM to Cutting Speed Conversions
*Feed per Minute - Feed per tooth Conversions
*Radial Chip Thinning Calculation
*Metal Removal rate Calculation
*Milling cut time Calculation
*Circle Milling Calculations - Both inner & outer
*Ball Mill Cusp Height Calculation
*Ball Mill Effective diameter/Chip Thinning Calculator
*Thread Milling Calculations - Both inner & outer

3. Drilling Calculators
*Cutting Speed Calculation by material
*Cycle time calculation
*Drill point Length calculation

4. Gun drilling Calculators
*Cutting Speed Calculation by material
*Cycle time calculation

5. Thread Calculators
6. True Position Calculators
7. Bolt Pattern Calculators
8. Surface Finish Calculators
9. Drill & Tap charts
10. Thread data for the following threads:
* 60° Threads (Pitch Ø, Minor Ø, Major Ø, Helix, Lead, etc.)
* NPT Threads
* Acme Threads
* STI Threads
11. Thread over 3 wire info (Size limits, min, max, & best wire)
12. Center drill dimensions
13. Unit converter
14. Hardness conversions
15. G-codes
16. M-codes
17. Blue Print Geometric Tolerance Descriptors - GD&T
18. SFM calculator for drilling, milling, & turning over 170 materials
19. Tap Drill Calculator for roll form & cut taps
20. Various Geometric calculators
21. Triangle Solver
22. CNC keyway calculator
23. Custom macro variables, logic, arguments, & arithmetic data
24. Machinist Forum
25. Export G-code for internal & external chamfers, tapers, & radii with tool nose comp.
26. Circle segment calculator ( arc calculator )
27. National Pipe Thread data - NPT threads
28. Material Property Search with machinability info
29. Material Weight Calculator for over 170 materials & 10 shapes
30. Tool Wear section with images helpful info to improve tool life
31. Machinist Test with 6 categories to test your strengths & weaknesses
32. Socket Head Cap Screw hole dimensions
33. Scientific Calculator which includes:
* sine (sin)
* cosine (cos)
* tangent (tan)
* arcsine (sin-1)
* arccosine (cos-1)
* arctangent (tan-1)
* square (x²)
* cube (x³)
* pi (π)
* square root (√)
* base 10 logarithm (log)
* exponential function (ex)
* natural logarithm (In).
34. Linear Thermal Expansion Calculator
35. Grinding Calculations
* Plunge Grind - Q Prime, grit penetration & aggressiveness
* Surface Grind - Q Prime, grit penetration & aggressiveness
* Grinding Wheel Velocity
* Work piece Velocity
* Work piece RPM to wheel RPM ratio cylindricity error calculator
* Wheel Mesh (Grit) size conversion
* Equivalent wheel diameter
36. More to come...

We're quickly becoming the best engineering calculator on the market
Check us out at www.cncdirt.com

What's New

Bug fixes

Version Information

Version
-
Downloads
10K+
Updated on
Oct 28, 2025
Released
Jul 26, 2015
Requires
Android Varies with device

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CNC Machinist Calculator Pro - Google Play Rankings

No ranking data available yet. Rankings are updated daily.

#30 in Top Paid Productivity in United States

#29 RealCalc Plus RealCalc Plus
#30 CNC Machinist Calculator Pro CNC Machinist Calculator Pro
#31 Cryptomator Cryptomator

#83 in Top Paid Productivity in Vietnam

#84 in Top Paid Productivity in Poland

#92 in Top Paid Productivity in Netherlands

#91 Voice Notes (Pro) Voice Notes (Pro)
#92 CNC Machinist Calculator Pro CNC Machinist Calculator Pro
#93 Calculator Plus Calculator Plus

CNC Machinist Calculator Pro users say on Google Play

★★★★★
Terry Loveless Terry Loveless

I've been a CNC machinist for over 28 years. I've always wanted a comprehensive piece of anything to help my math and machining calculations. Well done, gentelmen. Job well done. Now, if you could add gear info. Thanks 6/27/2024 It's been about 8 years later, and I have been using this app for all this time. I still love it. I still am using it. I would like to see metric convertion, When you look for a drill tap for an 8mmX1.25 the answers are metric. I guess I'm lazy, but it's an idea. Ty

4 Jun 27, 2024
★★★★
Guy Berglund Guy Berglund

Great app. Saves me time from running to my computer for some calculations

1 Jun 25, 2024
★★★
James Callaway James Callaway

it has a lot of features that are in the machine is handbook that are just easier access in this digital form. The brain checks, little multiple choice test over GD&t, reading measuring devices, interpreting blueprints, etc. invaluable for new operators coming into the field. My real big problem with it is a subscription based add-on calculator, calc ultra. for one year of that subscription, you could buy a TI-84

1 Oct 14, 2025
★★
Marvin w Marvin w

you made me buy it again just because I got a new phone. Pretty disappointed.

0 Jun 22, 2025
Naresh Kumar Naresh Kumar

waste of money and time

0 Oct 29, 2025

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