Free Pool Volume Calculator
Calculate the water volume of a rectangular swimming pool in gallons and liters.
ft
ft
ft
Volume (gallons)
16,832 gal
Volume (liters)63,713 L
Volume (cubic ft)2,250 cu ft
Volume (gallons) vs Pool Length
How to Calculate Pool Volume
For a rectangular pool, multiply length x width x average depth to get cubic feet, then convert to gallons.
Formula
Volume (cu ft) = Length x Width x Average Depth
Gallons = Cubic Feet x 7.481
For variable-depth pools, average the shallow and deep end depths.
Example Calculation
A 30 ft x 15 ft pool with 5 ft average depth.
- 01Volume = 30 x 15 x 5 = 2,250 cubic feet
- 02Gallons = 2,250 x 7.481 = 16,832 gallons
- 03Liters = 2,250 x 28.317 = 63,713 liters
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