Show common pipe sizes reference
Volume Results
Cubic Feet
8.727 ft³
Gallons (US)
65.28 gal
Liters
247.07 L
Common Pipe Sizes Reference
0.5" nominal0.245 gal/ft
0.75" nominal0.433 gal/ft
1" nominal0.755 gal/ft
1.5" nominal1.65 gal/ft
2" nominal2.72 gal/ft
3" nominal6.01 gal/ft
4" nominal10.33 gal/ft
6" nominal23.44 gal/ft
How It Works
Volume = π × r² × lengthπPi (3.14159)
Constant for circle calculation
r²Radius squared
(diameter ÷ 2) in feet
LLength
Pipe length in feet
Quick Reference: Pipe Volume Terminology
ID (Inside Diameter)
Internal measurement determining flow capacity
OD (Outside Diameter)
External measurement for fitting selection
Nominal Size
Trade name close to actual ID
Schedule
Wall thickness rating (40, 80, etc.)
Cubic Foot
1728 cubic inches = 7.48 gallons
Flow Rate
Volume per time (GPM = gal/min)