Best Duct Calc alternatives: apps like Duct Calc — HVAC Duct Sizer

9+ similar apps compared and reviewed

4.7 avg rating
9 free apps
Updated November 2026

Looking for something like Duct Calc? We've analyzed 9+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

KobCard

KobCard by KOB MARKETING

Gift Card Information Platform
4.1(377 ratings)
Free
KobCard screenshot 1
KobCard screenshot 2
KobCard screenshot 3
KobCard screenshot 4

KobCard is a comprehensive gift card information platform that offers real-time exchange rates, price calculations, and the latest news on gift cards. It serves as a one-stop destination for individuals looking to buy, sell, or stay informed about the world of gift cards.

Get More Info

Top Alternatives to Duct Calc

4.7(3 ratings)
FreeIn-App Purchases
Duct Calculator - HVAC Sizing screenshot 1
Duct Calculator - HVAC Sizing screenshot 2
Duct Calculator - HVAC Sizing screenshot 3
Duct Calculator - HVAC Sizing screenshot 4
Duct Calculator - HVAC Sizing screenshot 5

This professional HVAC utility assists engineers and technicians with precise duct sizing and airflow calculations for ventilation systems. It simplifies essential calculations for both design and installation work, improving on-site efficiency.

More apps like Duct Calc

4
HVAC Toolkit Lite
HVAC Toolkit Lite
HVAC Toolkit Lite
Useful tool for HVAC engineers
Free

This tool assists HVAC engineers with design checks and quick calculations. It offers various tools for ducting friction loss, pipe sizing, ventilation, and heat load estimations, providing instructions and formulas for each calculation.

Friction loss calculationPipe sizingVentilation calculations
📊 Productivity
(1)
free
5
Domestic Water Sizer
Domestic Water Sizer
Domestic Water Sizer
by Caleffi S.p.A
Free
📊 Productivity
(0)
6
Digitales Lüftungsaufmaß
Digitales Lüftungsaufmaß
Digitales Lüftungsaufmaß
Aufmaß für Lüftung neu gedacht
Free

Create detailed measurements for ventilation ducts and fittings with a 3D visualizer. Input data quickly, validate entries, and export to various formats. Designed for professionals in ventilation technology.

Digital measurement of ducts and fittings3D live view of componentsInput validation
📊 Productivity
(1)
free
7
ElbowCalc - Flat Pattern Maker
ElbowCalc - Flat Pattern Maker
ElbowCalc - Flat Pattern Maker
Smart Elbow Flat Pattern Tool
Free

This professional tool assists engineers and fabricators in quickly calculating and visualizing flat patterns for elbows and reducers. It provides instant pattern graphs with cut coordinates to streamline fabrication and minimize material waste.

Calculate various elbow typesGenerate flat pattern graphsSupports reducer bends
📊 Productivity
(7)
free with in-app purchases
8
Heating & Cooling HVAC Pro+
Heating & Cooling HVAC Pro+
Heating & Cooling HVAC Pro+
HVAC Tools
Free

This app provides HVAC professionals with quick access to product information, tools, and support. It allows users to check pricing, availability, find locations, and manage warranty claims. Features include a PT calculator, duct calculators, and a flashlight tool for on-site work.

View pricing and order statusReal-time product availabilityFind branch locations and hours
📊 Productivity
(46)
ad-supported
9
Hersons Kia Connect
Hersons Kia Connect
Hersons Kia Connect
Live car tracking & security
Free
📊 Productivity
(0)