Q=VA Flow Rate Calculator

Compute flow rate from velocity and area

 
 

Q=VA flow rate calculation is mobile-device-friendly as of July 22, 2014

Ducts, Pipes, and Culverts: 
Flowing Full or Partially Full:  Diameter, D (L): 
Compute Q from V and A Area, A (L2): 
Compute V from Q and A Velocity, V (L/T): 
Compute A from V and Q Flow Rate, Q (L3/T): 
Flowing Full:  © 2014 LMNO Engineering,
Compute Q from V and D Research, and Software, Ltd.
Compute V from Q and D http://www.LMNOeng.com
   

Units in flow rate calculator: You may enter numbers in any units, so long as you are consistent. (L) means that the variable has units of length (e.g. meters). (L3/T) means that the variable has units of cubic length per time (e.g. m3/s).

Flow rate equation: Q = VA. If circular, then A = π D2 / 4

The flow rate calculation does not check for unreasonable inputs such as negative values. All values should be entered as positive.

 

© 1998-2014 LMNO Engineering, Research, and Software, Ltd.  All rights reserved.

LMNO Engineering, Research, and Software, Ltd.
7860 Angel Ridge Rd.   Athens, Ohio 45701  USA   Phone and fax: (740) 592-1890
LMNO@LMNOeng.com    http://www.LMNOeng.com

 

To: 
LMNO Engineering home page (more calculations)  

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