Center drill dimensions are included within the app:

Includes Standard type centers size #00 thru #8
Includes Bell type centers size #11 thru #18

If you'd like to calculate the the depth of your centerdrill based on the diameter required, try the new CNC Machinist Calculator Ultra available on the App Store, Google Play, and on the web. This new centerdrill function allows you to enter the diameter required and instantly find the depth based on the selected drill.

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 28. Material Property Search 29. Material Weight Calculator 30. Tool Wear information with images 31. Machinist Test 32. Socket Head Cap Screw hole Dimensions . Download it today on iTunes or Google Play. See our Privacy Policy.