Our website uses necessary cookies to enable basic functions and optional cookies to help us to enhance your user experience. Learn more about our cookie policy by clicking "Learn More".
The most convenient HVAC duct sizing and air pressure drop calculator
HVAC Duct Calculator™ developed by Smart Apps Genius group is a handy App for air duct sizing and pressure drop calculations, useful for both round and rectangular ducts. A unique feature of this App is that it enables the user to select the unit of parameters in any combination. Calculation of pressure drop has been based on Darcy-Weisbach equation and Colebrook formula.
Thank you for your support! You can now access all our premium features. You can check your subscription status and manage subscription information on from User Center - Manage My Subscription page.
Ad-Free
Your browsing on APKPure will be ad-free
Member Badge
Your account will automatically have a member-exclusive avatar and badge
Dual-end Sharing
You can access Premium services after logging in on both the website and the app client.
Fast Downloads
You can now enjoy the Premium-exclusive faster download service.