Enter your pipe's Inner Diameter, Length, and Liquid Density into the Pipe Volume Calculator to find the Pipe Volume in multiple units, plus the Water Weight of the liquid filling that pipe — handy when you need to know exactly how much is flowing (or sitting) inside.
Pipe Volume
--
Volume
--
Volume
--
Water Weight
--
Water Weight
--
A 6-foot long pipe with a 2-inch inner diameter contains approximately 9.8 gallons or 37.1 liters of liquid. This is calculated using the formula: volume = π × (diameter/2)² × length.
To find pipe diameter from volume, rearrange the volume formula: diameter = 2 × √(volume / (π × length)). You need to know both the volume and length of the pipe to calculate the inner diameter.
Flow rate depends on pipe volume and liquid velocity. The formula is: flow rate = pipe cross-sectional area × velocity. This calculator provides volume capacity, but flow rate requires additional velocity measurements.
The calculator supports multiple units including inches, feet, yards, millimeters, centimeters, and meters for both diameter and length. Results are automatically converted to gallons, liters, and cubic feet.
Pipe volume is crucial for sizing pumps, calculating chemical dosing, determining system capacity, estimating fill times, and planning irrigation systems. It's essential for plumbing, HVAC, and industrial applications.
The water weight is calculated using standard water density (1 g/cm³ at room temperature). For other liquids, you can adjust the density value. Temperature and pressure variations may affect actual weight slightly.
Yes, the volume calculation works for any liquid since it's based purely on pipe geometry. The weight calculation can be adjusted by changing the liquid density value in the calculator.
Inner diameter is the internal space where liquid flows, while outer diameter includes pipe wall thickness. This calculator uses inner diameter because that's the space available for liquid volume.