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# Pipes with Water Content - Weight and Volume

## Estimate water content in pipes - weight and volume.

Pipe Size
(inside diameter)
(in)
Water Content
VolumeWeight
(lb/ft)
Volume/Weight
(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.

Inside diameter of pipe (m, mm, ft, in ...)

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

## Related Topics

• Dimensions - Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more.
• Fluid Flow and Pressure Loss - Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more.

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Temperature

oC
oF

Length

m
km
in
ft
yards
miles
naut miles

Area

m2
km2
in2
ft2
miles2
acres

Volume

m3
liters
in3
ft3
us gal

Weight

kgf
N
lbf

Velocity

m/s
km/h
ft/min
ft/s
mph
knots

Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O

Flow

m3/s
m3/h
US gpm
cfm

3 30