Skip to content
**We're working to become the best machining app on the market!**

### CNC Machinist Calculator Pro

### CNC Lathe Taper

### Bolt Circle Calculator

### Unit Conversion

### Turning Calculators

### True Position Calculators

### Triangle Solver

### Thread Calculator

### Thread Data

### Drill & Tap Calculator

### Surface Finish Calculators

### M-code & G-code lists

### Gun Drilling Calculator

### Lathe Taper Calculator

### Geometry Calculator

### Drilling Calculator

### Circle Segment Calculator

### Center Drill Dimensions

### CNC Keyway Cycle Time Calculator

### Custom Macro Cheat Sheet

### Hardness Conversions

### Drill & Tap Chart

### Material Cutting Speed Data

### Milling Calculators

### Machinist Test

### Material Data

### GD&T Test

### GD&T Descriptions

### Material Weight Calculator

**CNC Machinist Calculator Pro is a machining calculator designed to make your life easier. Our app is perfect for CNC programmers or operators who need to make quick calculations on the fly. It includes the following features:**

## 1. Turning Calculators 2. Milling Calculators 3. Drilling Calculators 4. Gun drilling Calculator 5. Thread Calculators 6. True Position Calculator 7. Bolt Pattern Calculator 8. Surface Finish Calculators 9. Drill & Tap charts 10. Thread Pitch charts 11. Center drill data 12. Unit converters 13. Hardness conversions 14. G-codes 15. M-codes 16. Blue Print GD&T 17. Machinability & cutting speed data for over 180 materials 18. Tap Drill Calculator for roll form & cut taps 19. Geometric calculators 20. Triangle Solver 21. Angle conversions 22. Circular segment calculator 23. Fraction Converter 24. Custom Macro info. 25. CNC Keyway cut time calculator 26. Thread Pitch over 3 wires calculator 27. Export lathe G-code for chamfers, tapers, & radii with tool nose compensation. Download it today on iTunes or Google Play. See our Privacy Policy.

Possibly the Best machinist app on the market. Designed and engineered for easy operation at any level.

All functions are programmed for both **inch** & **metric** calculations.

Calculate chamfers, taper, & radii. Then export the g-code for your CNC lathe. Export corner rounding g-code for internal & external chamfers, taper, & radii with tool nose compensation.

Calculate bolt circle coordinates based on bolt circle for up to 36 holes.

Convert degrees, minutes, & seconds to decimal degrees and vice versa. Convert fraction to decimal. Convert inch to metric. Convert surface meters to surface footage.

Groove & cut off cycle time calculator, Roughing cycle time calculator, Turning SFM calculator, SFM to RPM conversion tool, IPR to IPM conversion tool, IPM to IPR conversion tool

Calculate true position of a feature based on the distance from zero in the X & Y axis

Calculates angles and sides of both right & oblique triangles. Just enter any two values for a right triangle or any three values for an oblique triangle.

Calculate thread passes in turning. Also calculate helix angle, thread height, & more..

Get thread pitch, major, minor, root radius, helix angle, and more for 60° threads. Shows min and max wire sizes for checking each thread and shows the correct measurement over pins for whatever wire size you choose. Contains UNC, UNF, UNEF, UNS, UN, UNM, UNJ, & M profile threads. UN threads up to Ø4" & M profile threads up to Ø600mm

Tap drill calculator for both roll form and cut taps based on your required percentage of thread.

Calculates lathe surface finish based on tool radius and feed. Calculate mill side wall finish based on tool diameter, cutting edges, and feed rate. Calculate step over distance of ball end mill based on your required surface finish. Convert Ra finish to other common surface finishes such as RMS, Rp, & Rt.

Full listing & descriptions of m-codes & g-codes

Calculate speed, feed, cycle time & required coolant pressure for gun drilling based on material and hardness.

Calculate chamfers, taper, & radii. Then export the g-code for your CNC lathe. Export corner rounding g-code for internal & external chamfers, taper, & radii with tool nose compensation.

Calculate Sine bar block height. Calculate circular segment features. Calculate area, radius, & circumference of a circle. Calculate the diameter over a hex & diameter over the points of a square.

Calculate cutting speed, feed, & cut time based on drill diameter, tool material, and depth. Also calculate drill point length based on tool diameter and drill point angle.

Calculate angle, radius, arc length, chord length, tangent length, middle ordinate, segment area, and sector area of a circle segment.

Center drill dimensions for both standard and bell type center drills size 00 thru 8.

Estimate cycle time of keyway cuts in CNC machines. See www.cncbroachtools.com for more information.

Full variable list, arithmetic symbols and examples, macro variable arguments, branches & loops, and other reference data with examples (press and hold to see examples)

Convert hardness from Brinell, to Rockwell, to Tensile strength.

Tap and drill chart for sizes up to Ø1" (Ø25.4mm).

Calculate cutting speed for turning, milling, & drilling. Choose from over 180 different types of material. Choose cutter material type (Carbide or HSS) & fine tune by setting the material hardness. (App shows hardness limits for each material)

Cusp height calculator, Radial chip thinning calculator, Effective diameter for ball end mills, IPT to IPM conversion, Cutting speed calculator, SFM to RPM calculator

Test the new folks before they runs the 5 axis

Material Properties & machinability data for over 200 materials

One of the many test questions within the app

GD&T symbols & Definitions

Calculate material weight for 10 shapes & 180 materials