Spike's Calculators

Pipe Volume


Calculate the volume and capacity of pipes. This calculator uses inches for measurements.

Pipe Volume

Inside Diameter in
Length of Pipe ft in
Decimal Precision #


In Cubic Inches in³
In Cubic Feet ft³
In Cubic Metre
Pipe Capacity:
In US Gallons gal US
In Imperial Gallons gal Imperial
In Litres L


  1. enter the inside diameter of the pipe in inches
  2. the length of the pipe in feet and or inches
  3. decimal precision, number of digits after the decimal point


  1. the volume of the pipe in cubic inches
  2. the volume in cubic feet
  3. the volume in cubic metres
  4. the capacity of the pipe in US gallons
  5. the capacity in Imperial gallons
  6. the capacity in litres
V = 𝝅(D/2)*L
where V is the volume
𝝅 = 3.14159265
D the diameter
L the length of the pipe
one cubic inch (in³) = 0.000578703703703704 cubic feet (ft³)
one cubic inch (in³) = 0.000016387064 cubic metres (m³)
one cubic inch (in³) = 0.00432900432900432 gallons (gal) US
one cubic inch (in³) = 0.00360465014990905 gallons (gal) Imperial
one cubic inch (in³) = 0.016387064 litres (L)
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