## Volume of a rectangle (V, cu ft) = (length, ft) x (width, ft) x (height, ft), then convert cubic feet to gallons (1 cubic foot = 7.48 gallons)

If you have a rectangular shaped storage tank there is a very simple calculation that can give you the number of cubic feet that will fit inside of that rectangle. Once you have that number you can covert those cubic feet to gallons to know how many gallons of water your tank holds. Here is the formula:

(V, cu ft) = (L, length, ft) x (W, width, ft) x (H, height, ft)

This will give you the volume in cubic feet, which can be converted to gallons (1 cubic foot = 7.48 G, gallons) by taking (cu ft, cubic feet) x (7.48, number of gallons per cubic foot)

Remember:

V = Volume

L = Length

W = Width

H = Height

cu ft = Cubic Feet

G = Gallons