Pool Gallon Calculator

Pool gallon calculator calculates how many gallons of water are needed for the pool.

Rectangular Pool Measurement


To calculate rectangular pool volume,
multiply length, width and the depth of the rectangular pool.

V = Length x Width x Depth


Oval Pool Measurement



To calculate oval pool volume,
multiply π the semi major axis, the semi minor axis and the depth of the oval pool.

V = π (Major Axis / 2) x (Minor Axis / 2) x Depth


Circle Pool Measurement



To calculate circle pool volume,
multiply π, square of radius, and the depth of the circle pool.

V = π (Diameter / 2)² x Depth