Best Drill Size Charts Apps & Games

249+ iOS apps & games curated and reviewed

4.0 avg rating
13 free apps & games
Updated August 2026

Every iPhone needs a few good drill size charts apps and games. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Drill Size Charts Apps & Games (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric ConversionsDrill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions$0.994.5★ (22)NoNoAug 2026
2Screw Size & Drill Bit ChartScrew Size & Drill Bit ChartFreeNoYesAug 2026
3Drill and Tap Tool - Thread Tapping & Through HoleDrill and Tap Tool - Thread Tapping & Through Hole$1.994.3★ (30)NoNoAug 2026
4Drill Bit ConverterDrill Bit Converter$0.99NoNoJul 2026
5Tap & Drill Size ReferenceTap & Drill Size Reference$0.99NoNoAug 2026
6Drill SpeedDrill SpeedFree5.0★ (2)NoNoMay 2026
7FitCheck: Hole Sizes & FitsFitCheck: Hole Sizes & FitsFreeNoYesAug 2026
8WS Drill BitsWS Drill BitsFree5.0★ (2)NoNoMay 2026

Top Picks for Drill Size Charts

More Drill Size Charts apps to explore

4
Drill Bit Converter
Drill Bit Converter
Drill Bit Converter
by Dohmann Engineering Services
$0.99
🔧 Utilities
(0)
5
Tap & Drill Size Reference
Tap & Drill Size Reference
Tap & Drill Size Reference
UNC UNF Metric Thread Chart
$0.99
🔧 Utilities
(0)
6
Drill Speed
Drill Speed
Drill Speed
Drill Speed Calculator
Free

Easily calculate optimal drill speeds for various drill bits and materials with an intuitive icon-based interface. This app automatically adjusts options based on your selections and remembers your progress.

Intuitive icon-based interfaceWide selection of drill bits and materialsAutomatic option adjustment
🔍 Reference
(2)
free
7
FitCheck: Hole Sizes & Fits
FitCheck: Hole Sizes & Fits
FitCheck: Hole Sizes & Fits
Screws, bearings & inserts
Free
🔧 Utilities
(0)
8
WS Drill Bits
WS Drill Bits
WS Drill Bits
by Rein Rapp
Free

This application serves machinists, designers, and manufacturing personnel with essential drill bit calculations. It features a comprehensive drill size chart with decimal equivalents, a calculator for optimal speeds and feeds across various materials, and a tool for determining drill point depth based on angle.

Drill size and decimal equivalent chartFast vertical scrolling with color-coded valuesSliding scale for quick list navigation
📚 Education
(2)
free
9
Drill Calc
Drill Calc
Drill Calc
by Black Cat Systems
$2.99

This utility app helps you determine the correct drill bit size for threaded holes. It supports both inch and metric threads, calculates close and tight fit hole sizes, and provides tables for standard drill bit sizes and pipe information.

Calculates drill bit size for threaded holesSupports inch and metric threadsDisplays close and tight fit hole sizes
🔧 Utilities
(19)
paid
10
Drill Bit Matcher
Drill Bit Matcher
Drill Bit Matcher
Find Bit & Pilot Hole Size
Free
🔧 Utilities
(0)
11
Thread Pitch Gauge - Tap Drill
Thread Pitch Gauge - Tap Drill
Thread Pitch Gauge - Tap Drill
Bolt & Screw Identifier Tool
$1.99
🔧 Utilities
(0)
12
Drill Collar
Drill Collar
Drill Collar
by zhandos uakanov
$0.99
🔍 Reference
(0)
13
ThreadKing
ThreadKing
ThreadKing
Ultimate Reference for Threads
Free

This app serves as a comprehensive reference and calculator for various thread types and dimensions. It provides detailed information on Metric and UN threads, including tap sizes and thread calculations for cutting and forming taps. Users can also find drill size charts and calculate RPM and feed rates for different materials.

Metric and UN thread referenceDrill/Tap size chartsPipe thread information
📊 Productivity
(12)
free
14
Tank Charts 5.1
Tank Charts 5.1
Tank Charts 5.1
by Donald Johnson
Free

This application assists fuel haulers in accurately calculating product quantities when manually measuring tank levels. It simplifies the process of determining amounts for gasoline transport.

Manual tank gaugingProduct amount calculationGasoline hauler assistance
🔍 Reference
(1)
free
15
Charts - Chart Maker
Charts - Chart Maker
Charts - Chart Maker
Create charts easily
Free

Easily create a variety of charts with customizable options. Export or share your creations as images. Supports dark mode and multiple languages for a user-friendly experience.

Multiple chart types supportedExport and share as picturesCustomizable icons and appearance
🔧 Utilities
(3)
free with in-app purchases
16
Drill Merger
Drill Merger
Drill Merger
by Emrullah Can Demirpolat
Free
🎮 Games
(0)
17
Drill Runner 3D
Drill Runner 3D
Drill Runner 3D
by Ozgur Taskin
Free
🎮 Games
(0)
18
Mila's Ring Sizer & Converter
Mila's Ring Sizer & Converter
Mila's Ring Sizer & Converter
Jewelry & Wedding Band Fit
Free
🔧 Utilities
(0)
19
Ring Sizer : Finger Size
Ring Sizer : Finger Size
Ring Sizer : Finger Size
Ring Size & Finger Measure
Free
📊 Productivity
(0)
20
Charts Maker Tool: GraphSnap
Charts Maker Tool: GraphSnap
Charts Maker Tool: GraphSnap
Line Bar Pie Graphs & CSV
Free
📊 Productivity
(0)

FAQ about Drill Size Charts

What are the best drill size charts apps & games for iPhone?
Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions tops our drill size charts apps & games ranking as of August 2026, with a 4.5-star average from 22 App Store ratings, and it's priced at $0.99.
Yes — 13 of the top drill size charts apps & games we rank are free to download, including Screw Size & Drill Bit Chart and Drill Speed.
Drill Size Charts - Drill bit size tables to show US Number / Letter and Fraction Inch sizes in Decimal Inch and Metric Conversions has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 249+ drill size charts apps & games on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Drill Size Charts displays US Number and Letter Gauge Sizes, Fractional-Inch Sizes, and Metric Sizes. It also includes a combined table for easy comparison across all types.
You can easily find drill bit sizes by tapping the required size type and scrolling through the chart. A search bar is also available by scrolling up within any drill table.