Best Ductulator Apps

80+ iOS apps curated and reviewed

4.0 avg rating
16 free apps
Updated August 2026

Every iPhone needs a few good ductulator apps. We benchmark 80+ 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 Ductulator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Ductulator - Duct SizingDuctulator - Duct Sizing$3.994.7★ (317)NoNoAug 2026
2SMACNA Duct-U-LatorSMACNA Duct-U-LatorFree5.0★ (1)NoNoMay 2026
3WinFab - Sheet Metal DuctulatorWinFab - Sheet Metal Ductulator$3.994.8★ (6)NoNoAug 2026
4Duct Calculator - DuctCalcDuct Calculator - DuctCalcFree5.0★ (7)NoYesAug 2026
5AI DuctulatorAI Ductulator$3.993.9★ (9)NoNoAug 2026
6DigiductDigiductFree4.6★ (11)YesNoJul 2026
7Quietflex DuctulatorQuietflex DuctulatorFree5.0★ (1)NoNoMay 2026
8Duct Calculator: HVAC SizingDuct Calculator: HVAC SizingFreeNoYesAug 2026

Top Picks for Ductulator

Ductulator - Duct Sizing#1

Ductulator - Duct Sizing by Wassim Murr

HVAC Duct Design Calculator
Editor's Choice
📊 Productivity
4.7(317 ratings)
$3.99
#25in Productivity
Ductulator - Duct Sizing screenshot 1
Ductulator - Duct Sizing screenshot 2
Ductulator - Duct Sizing screenshot 3
Ductulator - Duct Sizing screenshot 4

Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.

More Ductulator apps to explore

4
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
Duct Calculator - DuctCalc
HVAC Sizing & Psychrometric
Free

This app provides professional HVAC duct sizing and psychrometric calculations in a single tool. It offers detailed calculations for various duct types and materials, along with comprehensive humid air property analysis. Designed for HVAC professionals, it replaces traditional ductulators with accurate digital functionality.

Duct sizing for round, rectangular, and flexible ductsFittings pressure drop calculationPsychrometric analysis with interactive chart
🔧 Utilities
(7)
free with in-app purchases
5
AI Ductulator
AI Ductulator
AI Ductulator
by pasquale dipaola
$3.99

This application serves as a duct sizing calculator for HVAC professionals and enthusiasts. It provides quick and accurate calculations for duct dimensions based on various parameters.

Duct sizing calculationsHVAC parameter inputAccurate dimension results
🔧 Utilities
(9)
paid
6
Digiduct
Digiduct
Digiduct
Duct-Sizing App
Free

This HVAC tool assists professionals with duct sizing calculations based on ASHRAE standards. It supports multiple duct shapes and offers intelligent features to ensure accurate and reliable designs for real-world scenarios.

Duct sizing for rectangular, round, and flat oval ductsCustomizable dimensions with locked valuesDuct location intelligence for context-aware sizing
🔧 Utilities
(11)
ad-supported
7
Quietflex Ductulator
Quietflex Ductulator
Quietflex Ductulator
by Goodman Manufacturing L.P.
Free

This utility app helps HVAC professionals and enthusiasts quickly calculate essential airflow metrics for various duct sizes. It provides CFM, FPM, and FL values, simplifying HVAC system design and analysis.

Calculate CFMCalculate FPMCalculate FL
🔧 Utilities
(1)
free
8
Duct Calculator: HVAC Sizing
Duct Calculator: HVAC Sizing
Duct Calculator: HVAC Sizing
HVAC duct sizing & airflow
Free
🔧 Utilities
(0)
9
PT Ductulator
PT Ductulator
PT Ductulator
Duct Calculator
Free
📊 Productivity
(0)
10
Ductulator
Ductulator
Ductulator
by Simon Leroux
Free

This app provides a simple and efficient tool for calculating the dimensions of square ventilation ducts. It's designed for engineers, architects, and contractors to generate data for mechanical ventilation, cooling, and HVAC projects. Quickly validate residential and commercial solutions with this easy-to-use calculator.

Calculate equivalent round diameter of square ductsConvert square duct dimensions by volume ratioProvide metric equivalence
📊 Productivity
(2)
free
11
HVAC Duct Size Calculator
HVAC Duct Size Calculator
HVAC Duct Size Calculator
by Alan Cave
$0.99

This utility app assists HVAC design professionals in calculating duct sizes. It goes beyond basic calculations to provide a list of suitable duct sizes based on design criteria, offering an intuitive interface for precise adjustments.

Duct size calculationVelocity, friction, and volume calculationsList of even-sized ducts
🔧 Utilities
(1)
paid
12
ChekDuct
ChekDuct
ChekDuct
by Mohamed Kharbat
Free
🔧 Utilities
(0)
13
Fieldpiece Job Link
Fieldpiece Job Link
Fieldpiece Job Link
by Fieldpiece Instruments, Inc
Free

This app connects wirelessly with compatible HVACR tools to help professionals troubleshoot, diagnose, and evaluate HVACR systems. It serves as a central hub for managing wireless tools and business solutions, linking your equipment to your jobs.

Wireless tool connectivitySystem troubleshootingDiagnostic capabilities
💼 Business
(490)
free
14
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
SuperCool Slide Rule HVAC
by Designstein, llc
Free

This app offers a comprehensive suite of tools for HVAC technicians. It provides interactive guides, step-by-step repair instructions, and calculators for various HVAC calculations including superheat, subcooling, and duct sizing.

Superheat & Subcooling chargingDuct sizing & layout calculatorCompressor windings troubleshooter
🔧 Utilities
(185)
free
15
Ductalator
Ductalator
Ductalator
HVAC Duct Sizing Calculator
Free
📊 Productivity
(0)
16
DuctSizer Pro
DuctSizer Pro
DuctSizer Pro
by LEONARDO NOVOA
Free

This tool quickly calculates HVAC duct sizes based on airflow and friction loss. It supports various duct shapes and provides key airflow values for field use.

Calculate CFM from duct sizeFind duct sizes from CFMSupports square, round, and oval duct
🔧 Utilities
(2)
free
17
DuctCalc.Ca
DuctCalc.Ca
DuctCalc.Ca
Ductulator Duct Calculator
Free

This utility app calculates duct dimensions and air velocity using two methods: Equal Friction and Velocity. It supports both round and rectangular ducts, offering precise calculations for HVAC professionals. Offline functionality is available with a subscription.

Duct sizing calculatorEqual Friction MethodVelocity Method
🔧 Utilities
(20)
free with in-app purchases
18
Greenheck Toolbox
Greenheck Toolbox
Greenheck Toolbox
by Greenheck
Free

This utility app provides two essential tools for HVAC professionals: a Fan Law Calculator to adjust fan performance based on changes in speed, and a Ductulator to quickly size ductwork. Easily calculate and determine duct dimensions and airflow with various input parameters.

Fan Law CalculatorDuctulator AppAdjust fan performance
🔧 Utilities
(3)
free
19
Bluon HVAC
Bluon HVAC
Bluon HVAC
HVAC Tools
Free

Access a vast database of HVAC models, manuals, and part lists to speed up your work. Utilize an AI-powered troubleshooting tool or connect with experienced technicians for real-time support.

500,000+ HVAC unit databaseManuals and part listsAI troubleshooting tool (MasterMechanic)
🔧 Utilities
(4.5K)
ad-supported
20
Duct Mate: HVAC Duct Sizer
Duct Mate: HVAC Duct Sizer
Duct Mate: HVAC Duct Sizer
Duct Sizing & Airflow Calc
Free
🔧 Utilities
(0)

FAQ about Ductulator

What are the best ductulator apps for iPhone?
Ductulator - Duct Sizing tops our ductulator apps ranking as of August 2026, with a 4.7-star average from 317 App Store ratings, and it's priced at $3.99.
Yes — 16 of the top ductulator apps we rank are free to download, including SMACNA Duct-U-Lator and Duct Calculator - DuctCalc.
Ductulator - Duct Sizing has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 80+ ductulator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Ductulator is a mobile application designed to instantly calculate HVAC duct sizes. It allows users to determine accurate duct dimensions based on airflow, friction rate, or velocity, eliminating the need for manual chart lookups.
Key features include instant calculation of suitable duct sizes based on friction rate or velocity, support for both IP and SI units, a detailed sizing mode for adjusting parameters, and compatibility with rectangular, circular, and flexible ducts.

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