Swimming Pool Volume

Construction & DIY

Calculate swimming pool water capacity in gallons and liters for rectangular, round, and oval pools with sloped deep ends, along with garden hose fill time.

Calculated Result
22,980 gal

Also 86,989 liters (3,072 cu ft) · fill time ≈ 38.3 hrs at 10 GPM

Formula: V = Area × Average depth × 7.48052 gal/cu ft

About this calculator

Knowing exact pool water capacity is critical for proper chemical balancing (chlorine shock, pH buffers, algaecides), pump sizing, and estimating municipal water utility fill times.

This calculator computes water volume for rectangular, circular, and oval pool shapes with constant or sloped depths, converting cubic volume to gallons and liters, and calculating fill time from garden hose flow rate.

How It Works & Formula

FormulaRect L×W×avg D · round πr²D

Average Depth = (Shallow Depth + Deep Depth) / 2. Rectangular: L × W × AvgDepth × 7.48 gal/cu ft. Round: π × r² × AvgDepth × 7.48 gal/cu ft. Oval: π × (L/2) × (W/2) × AvgDepth × 7.48 gal/cu ft.