Best Cnc Thread Drill Hole Calc Apps

212+ iOS apps curated and reviewed

4.5 avg rating
13 free apps
Updated June 2026

Looking for free cnc thread drill hole calc apps? 13 of our 212+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Cnc Thread Drill Hole Calc Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1CNC Machinist Calculator ProCNC Machinist Calculator Pro$14.994.7★ (642)NoNoJul 2026
2CNC Thread Drill Hole CalcCNC Thread Drill Hole Calc$0.99NoJul 2026
3CNC Machinist Calculator UltraCNC Machinist Calculator UltraFree4.9★ (24)NoYesJul 2026
4Drill and Tap Tool - Thread Tapping & Through HoleDrill and Tap Tool - Thread Tapping & Through Hole$1.994.3★ (29)NoNoJul 2026
5CNC Lathe Simulator LiteCNC Lathe Simulator LiteFree4.0★ (10)NoNoMay 2026
6The Phillips MachinistThe Phillips MachinistFree4.6★ (394)YesNoJul 2026
7Machinist JourneymanMachinist Journeyman$9.994.3★ (15)NoNoJul 2026
8Construction CalculatorConstruction CalculatorFree4.7★ (554)NoYesJul 2026

Top Picks for Cnc Thread Drill Hole Calc

CNC Machinist Calculator Pro#1

CNC Machinist Calculator Pro by Shane Anderson

Editor's Choice
📊 Productivity
4.7😊(642 ratings)
$14.99
CNC Machinist Calculator Pro screenshot 1
CNC Machinist Calculator Pro screenshot 2
CNC Machinist Calculator Pro screenshot 3
CNC Machinist Calculator Pro screenshot 4
CNC Machinist Calculator Pro screenshot 5
CNC Machinist Calculator Pro screenshot 6

This app provides a comprehensive suite of calculators and tools for CNC machinists, engineers, and hobbyists. It offers specialized calculations for turning, milling, drilling, threading, and geometric tolerances, along with material data and G-code generation.

What We Love

  • 🚀 Useful for thread data
  • 👍 Helpful for programming mills and designing fixtures
  • 👍 Provides all the technical data needed
  • 👍 Great resource for learning as a beginner machinist

Room to Improve

  • 🐛 No more support or new features
  • 🐛 No easy reference chart for threads
  • 🐛 Calculator issues with mathematical operations
CNC Machinist Calculator Ultra#3

CNC Machinist Calculator Ultra by Shane Anderson

All-in-One Machining Tool
Worth Considering
📊 Productivity
4.9(24 ratings)
FreeIn-App Purchases
CNC Machinist Calculator Ultra screenshot 1
CNC Machinist Calculator Ultra screenshot 2
CNC Machinist Calculator Ultra screenshot 3
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CNC Machinist Calculator Ultra screenshot 6

This app provides machinists and engineers with a comprehensive suite of tools for CNC operations. It offers a wide range of calculations for turning, milling, drilling, and more, designed to enhance precision and boost productivity.

More Cnc Thread Drill Hole Calc apps to explore

4
Drill and Tap Tool - Thread Tapping & Through Hole
Drill and Tap Tool - Thread Tapping & Through Hole
Drill and Tap Tool - Thread Tapping & Through Hole
by Chewy Applications
$1.99

Calculate the correct drill bit size for your tapping operations. Supports various thread types and inch/metric measurements. Provides precise calculations for depth of thread and clearance.

Metric and US Standard tap/drill supportSpinning dial interface for easy selectionCalculates drill size for tapping
🔍 Reference
(29)
paid
5
CNC Lathe Simulator Lite
CNC Lathe Simulator Lite
CNC Lathe Simulator Lite
CNC Simulator Fanuc Code
Free

Learn CNC lathe programming with a 3D simulator. Practice G-code, edit control programs, and visualize machining operations. Ideal for students and aspiring metalworking specialists.

G-code programming practice3D simulation of lathe operationsControl program file management
📚 Education
(10)
free
6
The Phillips Machinist
The Phillips Machinist
The Phillips Machinist
by Phillips Corporation
Free

Access essential machine codes, calculators, and practical resources for machinists. Get direct support from engineers and explore a library of machining information. Enhance your productivity and problem-solving on the shop floor.

Haas G & M reference codesError and Alarm CodesCalculator library (Inch/Metric)
📊 Productivity
(394)
free with in-app purchases
7
Machinist Journeyman
Machinist Journeyman
Machinist Journeyman
by James Rowe
$9.99

This app provides a comprehensive suite of tools for machinists, offering calculations for milling, turning, drilling, math, conversions, and estimating. It includes features like chip thinning, circular interpolation, tap drill sizes, and bolt circle calculations, designed for everyday use in machine shops.

Milling calculations (IPM & IPR)Turning calculationsDrilling calculations
💼 Business
(15)
paid
8
Construction Calculator
Construction Calculator
Construction Calculator
Feet Inch Calculator
Free

This app is a powerful calculator designed for construction and woodworking professionals, as well as students. It simplifies calculations involving feet, inches, and fractions, offering conversions between various measurement units and displaying equations and results simultaneously. Advanced features are available through optional in-app purchases.

Decimal to fraction converterFraction to decimal conversionSimultaneous equation and result display
🔧 Utilities
(554)
free with in-app purchases
9
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
by Southwire Company
Free

This tool assists electricians, engineers, and contractors in determining the correct conduit size based on NEC guidelines. It calculates conduit fill percentages and jam probability, saving time compared to manual calculations.

Conduit size calculationNEC fill percentagesJam probability
🔧 Utilities
(746)
free
10
Machining Advisor Pro
Machining Advisor Pro
Machining Advisor Pro
CNC Speeds & Feeds Calculator
Free

This app provides recommended running parameters for CNC machining, specifically for Helical Solutions and Harvey Tool products. It generates customized speeds and feeds based on your end mill, tool path, material, and machine setup, optimizing metal removal rates and shop productivity.

CNC speeds and feeds calculatorOptimized for 30,000+ productsSupports 300+ material grades
📊 Productivity
(162)
ad-supported
11
Flat Pattern Bend Calculator
Flat Pattern Bend Calculator
Flat Pattern Bend Calculator
Cad for pipe elbow,cone,flange
Free

This app provides accurate flat pattern layouts for complex sheet metal shapes and transitions. It simplifies calculations for cones, frustums, cylinders, and various transition pieces, saving time and reducing errors in fabrication projects.

Cone calculationsFrustum calculationsTruncated cylinder layouts
🔧 Utilities
(151)
free with in-app purchases
12
Measure Master Pro Calculator
Measure Master Pro Calculator
Measure Master Pro Calculator
Design + Building Math Calc
Free

This app provides comprehensive U.S. and metric unit conversions and advanced calculations for design and building projects. It offers solutions for geometry, weight, and dimensional analysis, with a user-friendly interface and built-in help.

Multi-dimensional unit conversion (U.S. & metric)Advanced weight calculationsGeometry solutions (circle area, circumference)
🔧 Utilities
(4K)
free with in-app purchases
13
CNC Lathe Simulator
CNC Lathe Simulator
CNC Lathe Simulator
CNC Simulator Fanuc Code
$6.99

This educational tool simulates a CNC lathe for beginners in machine building. It allows users to learn G-code programming for turning operations with 3D visualization of tool movements and workpiece processing. Ideal for students and distance learning in metallurgy and engineering.

G-code programming for turning operations3D simulation of lathe and tool movementsWorkpiece surface visualization
📚 Education
(14)
free
14
Quick Calc Hydraulics
Quick Calc Hydraulics
Quick Calc Hydraulics
by Schlumberger Technology Corporation
Free

This app calculates hydraulic horsepower, jet velocity, and impact forces at a jet nozzle orifice for earth-boring operations. Users input fluid density, flow rates, TFA, and bit diameter to get results for conventional drilling fluids. Calculated data can be shared with contacts.

Hydraulic horsepower calculationJet velocity calculationImpact force calculation
💼 Business
(9)
free
15
Southwire® Voltage Drop Calc
Southwire® Voltage Drop Calc
Southwire® Voltage Drop Calc
Southwire Calculator
Free

Calculate the appropriate wire size for electrical circuits. This tool helps determine wire size based on voltage drop and current carrying capacity, ensuring compliance with NEC ampacity limits.

Determine wire size for voltage dropCalculate voltage drop for conductor runsLimit wire size by voltage drop
🔧 Utilities
(1.5K)
free
16
Cutter
Cutter
Cutter
Milling Speeds and Feeds
Free
$4.99 | 100% OFF

Calculate optimal milling speeds and feeds for various cutters. Supports metric and US units, generating baseline data from tool parameters and material. Features include Material Removal Rate, Chip Thinning, and Ball nose calculations.

Speeds and feeds calculatorMetric & US unitsMaterial Removal Rate
🔧 Utilities
(142)
free
17
Tape Measure Calculator Pro
Tape Measure Calculator Pro
Tape Measure Calculator Pro
Measuring Math Made Easy
$3.99

Perform complex calculations directly on a visual tape measure. Easily add, subtract, multiply, and divide measurements, mixing decimals and fractions. Get results in inches, feet, and centimeters, in both decimal and fractional formats, saving time and preventing errors.

Visual tape measure calculationsAdd, subtract, multiply, divide measurementsMix decimals and fractions
🔧 Utilities
(2.1K)
paid
18
CNC Lathe calculator
CNC Lathe calculator
CNC Lathe calculator
GCode & Macro program master
$4.99

This utility app assists machining professionals with CNC lathe and ordinary lathe operations. It offers quick calculations for common parts, programming, and measurements, including arc tangent points, threads, and tapers.

Arc tangent point calculation with G Code generationThread calculation and program generationCNC Macro program for common graphics
🔧 Utilities
(4)
paid
19
CNC Points
CNC Points
CNC Points
by Lauro Perez Bernabe
Free

Calculate tangency points for CNC machining by inputting angle, coordinates, and radius. This tool simplifies complex calculations for users working with CNC machines.

Tangency point calculationInput angle, x, y coordinatesInput radius
📚 Education
(2)
free
20
Drill Bit Nozzle Calculator
Drill Bit Nozzle Calculator
Drill Bit Nozzle Calculator
by NOV Inc.
Free

Calculate essential drilling parameters like bit TFA, pressure drop, and impact force using bit size, flow rate, and mud weight. Offers a reverse calculation to determine nozzle sizes for a specific total flow area and number of nozzles.

Calculate bit TFACalculate pressure dropCalculate HSI
💼 Business
(2)
free

FAQ about Cnc Thread Drill Hole Calc

What are the best cnc thread drill hole calc apps for iPhone?
CNC Machinist Calculator Pro tops our cnc thread drill hole calc apps ranking as of June 2026, with a 4.7-star average from 642 App Store ratings, and it's priced at $14.99.
Yes — 13 of the top cnc thread drill hole calc apps we rank are free to download, including CNC Machinist Calculator Ultra and CNC Lathe Simulator Lite.
CNC Machinist Calculator Pro has no ads and has no in-app purchases, according to its App Store listing as of June 2026.
We track 212+ cnc thread drill hole calc apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
This app is a specialized calculator designed for professionals and hobbyists in the CNC machining field. It offers a wide range of tools for performing quick calculations related to turning, milling, drilling, threading, geometric tolerances, and more, aiding in programming, operation, and quoting.
Key features include dedicated calculators for turning, milling, and drilling operations, along with tools for thread calculations, bolt patterns, surface finish, and blueprint geometric tolerance descriptors (GD&T). It also provides material data, unit conversions, and the ability to export G-code for specific features.