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Drill Calc

By Black Cat Systems

This app is only available on the App Store for iOS devices.


Need to find the right drill bit size for a hole? Drill Calc calculates the correct drill bit size to use for threaded holes, based on the bolt (tap) diameter and thread pitch and percentage, for both inch and metric threads. Close and tight fit hole sizes for many popular drill sizes are also displayed.

It also has tables of standard inch fractional and numeric drill bit sizes, as well as complete information for various pipe sizes. There is also detailed information about the commonly used sizes of wood screws.

Buy your copy of Drill Calc today, and put away your drill chart.

What's New in Version 2.4

Added information for wood screws.
Combined list of numeric and fractional drill sizes.
Updates for iOS 9.3.


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Drill Calc
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This app is designed for both iPhone and iPad
  • $2.99
  • Category: Utilities
  • Updated:
  • Version: 2.4
  • Size: 1.5 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.

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