Diameter(D): Outside Diameter
Length(L): End to end
Radius(R): D/2
pi(π): 3.14159 (approx)
((π r^2)*L)/231 = Fluid Gallons
* NOTE: Actual fluid capacity will be less than volume calculated by external dimensions.
Rectangle Shaped Tanks
Width(W): Dimension from side to side or end to end (length
Depth(D): Dimension from front to back
Height(H): Dimension from top to bottom. Add 2" for thermal expansion
(Width*Depth*Height)/231 = Fluid Gallons
* NOTE: Actual fluid capacity will be less than volume calculated by external dimensions.
"L" Shaped Tanks
Width(W): Dimension from side to side or end to end (length
Depth(D): Dimension from front to back
Height(H): Dimension from top to bottom. Add 2" for thermal expansion