Flow Conversion Calculator
Velocity is measurement of the rate of displacement of or gas at a specific location. Concept of Velocity can be used in conditioning, heating and ventilating work. Velocity (distance traveled per unit of time) is usually expressed in Linear Feet per Minute (LFM). By multiplying velocity by the cross section area of a duct, you can determine the volume flowing past a point in the duct per unit of time. Volume flow is usually measured in Cubic Feet per Minute (CFM).
Enter Your Values:
Flow:
Rectangle Duct
H: W:   
Circular Duct
R:        
Results:
ft/min (LFM)
m/s
miles/hr (MPH)
ft3/min (CFM)
m3/hr
L/s