Best Ductulator Duct Sizing Apps

92+ iOS apps curated and reviewed

3.9 avg rating
15 free apps
Updated June 2026

Every iPhone needs a few good ductulator duct sizing apps. We benchmark 92+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Ductulator Duct Sizing

More Ductulator Duct Sizing apps to explore

4
WinFab - Sheet Metal Ductulator
WinFab - Sheet Metal Ductulator
WinFab - Sheet Metal Ductulator
by pasquale dipaola
$3.99

This application is a duct sizing calculator designed to help users quickly and accurately determine the optimal size for sheet metal ducts. Try it out to streamline your duct sizing calculations and get precise results.

💼 Business
(6)
5
Digiduct
Digiduct
Digiduct
Duct-Sizing App
Free

This HVAC duct-sizing app utilizes ASHRAE Fundamentals equations, offering accurate sizing for rectangular, round, and flat oval ducts with customizable dimensions and intelligent location parameters. Ensure precision in your HVAC designs by leveraging the unique features of this app.

🔧 Utilities
(10)
6
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
by Designstein, llc
Free

Get advanced solutions for HVAC problems with an interactive app that guides technicians through repair steps. Simplify complex issues and enhance your repair processes.

🔧 Utilities
(185)
7
Ductalator
Ductalator
Ductalator
HVAC Duct Sizing Calculator
Free
📊 Productivity
(0)
8
Quietflex Ductulator
Quietflex Ductulator
Quietflex Ductulator
by Goodman Manufacturing L.P.
Free
🔧 Utilities
(1)
9
DuctCalc.Ca
DuctCalc.Ca
DuctCalc.Ca
Ductulator Duct Calculator
Free

This duct calculator app allows users to size ducts using the Equal Friction Method and Velocity Method, calculating dimensions and air velocity for round and rectangular ducts, with the option to subscribe for full airflow functionality. By subscribing, users can access the full range of airflow calculations and use the app offline, making it a convenient tool for duct sizing and engineering applications.

🔧 Utilities
(20)
10
Thermaflex Duct Calculator
Thermaflex Duct Calculator
Thermaflex Duct Calculator
by Gastite Products LLC
Free

This convenient application allows HVAC engineers to easily determine the smallest recommended duct size for their installation, based on specific volume and friction loss. Simply select the product, friction loss, and volume, and the app will calculate the velocity and display the appropriate duct size for your application.

🔧 Utilities
(1)
11
Duct Calculator
Duct Calculator
Duct Calculator
by OMIKRON MAKINE MUHENDISLIGI IC VE DIS TICARET SANAYI LIMITED SIRKETI
Free

This mobile application allows users to easily calculate duct sizes and make necessary adjustments. Download it now to simplify your duct calculations and take control of your projects.

🔧 Utilities
(1)
12
PT Ductulator
PT Ductulator
PT Ductulator
Duct Calculator
Free
📊 Productivity
(0)
13
Duct Calculator Elite
Duct Calculator Elite
Duct Calculator Elite
Ducting Size Calculator
$6.99

This ducting size calculator simplifies the job of duct sizing for HVAC professionals, allowing users to calculate duct size, velocity, pressure drop, and flow rate for ductwork with precision and ease. Download the app to streamline your duct sizing calculations and take advantage of customizable preference settings and accurate solver equations.

🔧 Utilities
(220)
14
HVAC Duct Size Calculator
HVAC Duct Size Calculator
HVAC Duct Size Calculator
by Alan Cave
$0.99

This application helps HVAC design professionals determine optimal duct sizes with precision, offering a list of suitable even-sized ducts at various aspect ratios. It features an intuitive interface for easy adjustments and calculations, making it a valuable tool for streamlining duct sizing tasks.

🔧 Utilities
(1)
15
Baker HVAC Pro+
Baker HVAC Pro+
Baker HVAC Pro+
HVAC Tools
Free
📊 Productivity
(570)
16
Duct Calculator S&P
Duct Calculator S&P
Duct Calculator S&P
by S&P SISTEMAS DE VENTILACION SL.
Free

This application allows users to perform various duct calculations, including diameter conversions, ventilation parameter calculations, pressure drop calculations, and unit conversions, making it easy to design and optimize duct systems. Try it out to simplify your duct calculations and get accurate results quickly.

🔧 Utilities
(1)
17
Ductulator
Ductulator
Ductulator
by Simon Leroux
Free

This application is a simple and efficient calculator for determining ventilation duct dimensions, specifically designed for engineers, architects, and contractors. It enables users to quickly calculate equivalent round diameters for square ventilation ducts, convert duct dimensions, and obtain metric equivalences, making it an essential tool for mechanical ventilation, air conditioning, and heating projects.

📊 Productivity
(2)
18
ASHRAE HVAC Duct Sizer
ASHRAE HVAC Duct Sizer
ASHRAE HVAC Duct Sizer
HVAC Duct Sizing and more....
$5.99

This application allows users to quickly size HVAC duct runs using the constant friction method, with features to analyze existing duct systems and display a range of duct sizes. It offers various input modes, unit conversions, and the ability to email results for further analysis on a desktop computer.

💼 Business
(0)
19
Homans HVAC Pro+
Homans HVAC Pro+
Homans HVAC Pro+
HVAC Tools
Free

This mobile app provides HVAC professionals with on-the-go access to product information, tools, and resources to streamline their work, including order tracking, duct calculation, and product availability. By downloading the app, professionals can save time, increase efficiency, and stay connected with their supplier for expert technical support and exclusive offers.

📊 Productivity
(63)
20
Greenheck Toolbox
Greenheck Toolbox
Greenheck Toolbox
by Greenheck
Free

This application offers two essential tools for HVAC professionals: a Fan Law Calculator to determine fan performance by modifying existing measurements, and a Ductulator to quickly size HVAC duct based on various inputs. By using these tools, users can easily calculate and determine essential parameters for their HVAC systems.

🔧 Utilities
(3)

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