Duct Calculator

You can simply calculate the required air volume in the field
You can calculate and select the duct size.

Calculate the volume, calculate the air volume according to the number of ventilation
Calculate the wind speed and cross-sectional area according to the size of the duct.
Checking the contents as a result of changing conditions
You can refer to it in selecting the standard.

You can save the calculations and check them again later
You can search by application.