Duct Calculator.
HVAC Airflow & Duct Sizing
About
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.
What's New in Duct Calculator.
1.0
December 24, 2025
In-App Purchases
$9.99
Lifetime premium
purchase to use app lifetime
Developer apps
FAQ
What is the Duct Calculator app?
Duct Calculator is a professional HVAC utility designed to help engineers and technicians accurately calculate duct sizes and airflow values for ventilation systems. It simplifies essential HVAC calculations for design and installation work.
What types of ducts can Duct Calculator size?
Duct Calculator supports sizing for both rectangular and circular ducts. The calculations are provided in inches, making it suitable for a wide range of HVAC projects.
Can Duct Calculator determine airflow rates?
Yes, Duct Calculator can determine air flow rate accurately in CFM (Cubic Feet per Minute) and air velocity in FPM (Feet per Minute). This helps professionals verify system performance and ensure proper ventilation.
Is Duct Calculator suitable for on-site use?
Yes, the app features a simple interface designed for fast calculations on-site or during design work. It's a reliable and practical tool for heating, ventilation, and air conditioning professionals.
What devices does Duct Calculator support?
Duct Calculator is available for iPhone, iPad, and iPod. It is designed for Apple devices.
How often is Duct Calculator updated?
The latest version of Duct Calculator is 1.0, and it was last updated on December 24, 2025. Future updates will likely focus on improvements and new features.
Does Duct Calculator have ads?
Duct Calculator is free to download and use. An in-app purchase is available to remove advertisements, offering a lifetime ad-free experience.
What is the age rating for Duct Calculator?
Duct Calculator has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.
