AIR FLOW CONVERSION CALCULATOR


CUI’s air flow conversion calculator can be used to convert between common units for volume air flow and air velocity flowing past a point in a specified area of duct. To use the calculator, enter your air velocity or volume air flow and duct area/type, select your units, click calculate air flow and your converted velocity and volume units will be shown.

Air Flow


 
Required Field

Duct Type/Area



Rectangular
Required Field
Required Field

Circular

Pre-Calculated Area

Velocity Units


ft/min (LFM)
m/s
miles/hr (MPH)

Volume Units


ft3/min (CFM)
m3/hr
L/s