Duct Calculator for Android

11 things about Duct Calculator

1. Changing the Width or Height will update the equivalent Diameter if it is unlocked, or the other rectangular duct dimension of the Diameter size is locked.

2. Move the sliders for Airflow, Duct Diameter, Width and Height up and down to match the desired duct size to calculate velocity and pressure drop for.

3. The values for Airflow, Diameter, Width and Height can be directly edited in the text boxes to allow quick entry of exact numbers.

4. The Duct Calculator App for iPhone/iPad is a modern take on a the classic duct sizing wheel, allowing HVAC engineers, designers and contractors quickly and accurately size a new duct or calculate the performance of an existing duct on your iOS devices.

5. The lock symbols to the right of the duct dimensions indicate if that particular dimension is locked when calculating new equivalent values when a dimension is updated.

6. Changing the diameter will updated either the equivalent Width or the Height, depending on which dimension is unlocked.

7. The values for the calculated Velocity for Round Duct and Rectangular Duct are shown, as is the Pressure Drop per Length value.

8. Lock friction rate, diameter or width or height to make the calculations you need for your design.

9. Adjust the airflow, diameter, width or height sliders with your thumbs.

10. Shows live equivalent round/rectangular duct sizes.

11. Use the airflow and size sliders for quick calculations.