Calculation of Required Pipe Diameter

hL
ft
e
ft
L
ft
Q
cfs
r
slugs/ft³
m
lb-sec/ft²
D*
in

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D
ft
f
A
ft²
V
ft/sec
Re

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f

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D
ft
D
in

*Standard nominal U.S. pipe sizes in inches:

1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4, 5, 6,  10, 12,  14, 16,18, 20, 24, 30, 42, 48, 54, 60

Disclaimer: The information provided by this calculator is intended for informational and educations purposes only. The default figures shown are hypothetical and may not be applicable to your individual situation. We are not responsible for the consequences of any decisions or actions taken in reliance upon or as a result of the information provided by this tool. We are not responsible for any human errors or omissions.