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Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions app for iPhone and iPad


4.4 ( 7184 ratings )
Utilities Reference
Developer: Chewy Applications
0.99 USD
Current version: 2.0, last update: 7 years ago
First release : 08 Feb 2011
App size: 1.68 Mb

An easy-to-use set of charts for viewing various drill bit size types and their decimal inch and metric size equivalents and conversions. No typing required, just tap the required size type, and scroll through the chart to find your drill size.

Tables include common drill bit size types:
• US Number and Letter Gauge Sizes
• Fractional-Inch Sizes
• Metric Sizes
• A table with all types combined, for easy comparison of sizes

A helpful reference tool for anyone dealing with drills of various types: engineers, trades-men, students, tool makers, fitters and turners, fabricators, etc.

Other Features:

• Search •
Scroll up within any drill table to reveal the search bar.

• All Device Orientations Supported •
The app can be used in both landscape and portrait orientations, as well as upside-down.

• Universal App •
This app is universal; meaning you only need to buy it once to be able to install it on all your iOS devices (iPhone, iPod Touch, and iPad)

If you have suggestions, requests, or need support, feel free to contact us through the app, or by emailing [email protected].

Latest reviews of Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions app for iPhone and iPad

Great quick reference!
Thorough and exactly what I needed.
Drill sizes
Awesome app I needed the the decimal to fractions for metal thickness and such when using a micrometer to get common fractions not ( .160 = 4/25 ) And now I got these other tables to use too.
Simple and to the point!
I needed a reference to double check my drill sizes and decimal equivalent. Works for me! On the next update I would like see a reference for tap drill sizes! Look forward to it. This has become on of the most used apps on my phone!
Great app
Simple and straight forward. Has all the features I needed.
Drill chart
As a metal fabricator I have to say this a handy app. Especially when working in the field away from my printed chart. I agree with another reviewer that a drill/tap add on would be great! Worth the buck I spent.
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