Home Calculators Pool Gallon Calculator

Pool Gallon Calculator

Calculate the exact water volume of any pool shape — rectangular, oval, round, kidney, or L-shaped. Get gallons, liters, fill time, chemical doses, and pump turnover rates.

Pool Shape

Select your pool's shape to get the right formula

Depth Configuration

Most pools have a shallow and deep end

Equipment & Chemicals (optional)

For fill time, turnover, and chemical dose estimates

Avg garden hose ≈ 600 GPH

Typical ≈ 1–3× pool vol/day

Common Pool Presets

Standard pool sizes for quick calculations

Pool Volume

Volume Visualizer

Fill Time & Pump Turnover

Chemical Dosing Guide

Estimated amounts to treat your pool volume

Partial Fill Reference

Volume at different fill levels

Fill LevelGallons (US)LitersCu FtFill Time

Pool Maintenance Tips

Volume Summary

Enter dimensions and click
Calculate

Typical Pool Sizes

12×24 ft (above)~6,900 gal
15×30 ft~14,000 gal
16×32 ft~18,000 gal
18×36 ft~24,000 gal
20×40 ft~30,000 gal
24×48 ft~45,000 gal
Round 24 ft dia~13,500 gal

Chemical Targets

Free Chlorine1–3 ppm
pH7.4–7.6
Alkalinity80–120 ppm
Cyanuric Acid30–50 ppm
Calcium Hardness200–400 ppm
TDS<2000 ppm

Conversion Reference

1 US Gal3.785 L
1 Cu Ft7.481 US Gal
1 Cu Yd201.97 Gal
1 US Gal0.833 Imp Gal
1 Cu M264.17 US Gal