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Pipes with Water Content - Weight and Volume

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Pipes with Water Content - Weight and Volume
Pipe Size
(inside diameter)
Water Content
(in3/ft)(gallons/ft)(liter/m, kg/m)
1/4 0.59 0.003 0.02 0.030
3/8 1.33 0.006 0.05 0.074
1/2 2.36 0.010 0.09 0.13
3/4 5.30 0.023 0.19 0.28
1 9.43 0.041 0.34 0.51
1 1/4 14.7 0.064 0.53 0.79
1 1/2 21.2 0.092 0.77 1.1
2 37.7 0.163 1.36 2.0
2 1/2 58.9 0.255 2.13 3.2
3 84.8 0.367 2.31 3.4
4 150.8 0.653 5.44 8.1
5 235.6 1.02 8.50 13
6 339.3 1.47 12.2 18
8 603.2 2.61 21.8 32
10 942.5 4.08 34.0 51
12 1357.2 5.88 49.0 73
15 2120.6 9.18 76.5 114
  • 1 lb/ft = 1.49 kg/m
  • 1 gal(US)/ft = 12.4 liter/m

Note that for most pipes Nominal Size is not equal to inside diameter. For exact volumes - check the pipe documentation or standard - and use the calculator below.

The volume weight for other liquids can be calculated when compensated for density.  

Example - Water Content in Pipe

The water volume in a 12 m long 2" pipe can be calculated as

(2.0 liter/m) (12 m)

= 24 liter

Pipes - Volume Calculator

This calculator can be used to calculate volume of water or other liquids in pipes. The calculator is generic and can be used for any units as long as the use of units are consistent. If input is m the result is m3/m and so on.

Use the volume converter in the left column for other units.

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