CNC Machinist Calculator Pro

Machinist Apps

About this app

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

Ratings and reviews

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

Best App a Machinist could ever have. I see a negative review here and there and I really don't understand why. It should be 5 stars across the board. I have bought many machinist calculators, software, or other apps and nothing has been close to this one at all. Some of them are running 4 times the price, with 25% of the features. I've had it now since early 2023 and have used it almost everyday since. Definitely one you need buy whether you've been doing this 30 years or just starting out.

4.999/5, absolutely love it for work. The machine I run wont do cutter comp, this allows me to calculate and cut angles and radii as if the machine was working correctly. The angle calculator is great, only 2 "complaints" I could have is the calculator doesn't show a history so if you mistype soemthing theres seemingly no way to check, and the cutter comp wont do more than one angle, so on a part with an angled OD leading to another angled OD I have to write 2 seperate programs.

What’s new

Bug fixes