Pool Ratio

18 × 52 ft oval pool: how many gallons?

A 18 × 52 ft oval pool with 4 ft of water holds about 22,000 US gallons (83,267 litres). Here is what that means for salt and chemicals.

Last updated · Checked against published product doses · How we calculate

Volume
22,000 gal
83,267 litres · 4 ft of water
Salt to 3,200 ppm (new salt pool)587 lb · 15 × 40 lb bags
10% liquid chlorine per +1 ppm28 fl oz
Stabilizer 0 → 40 ppm7.3 lb
Baking soda per +10 ppm alkalinity3.1 lb
Calcium chloride (77%) per +10 ppm42 oz

Open the chemical calculator for this pool →

The maths

  1. Area = π × 26 × 9 = 735.1 sq ft
  2. Volume = 735.1 × 4 = 2,941 cu ft
  3. 2,941 cu ft × 7.48 gal per cu ft

= 22,000 US gallons

Real pools vary: water levels sit a few inches below the wall top, floors slope and corners are rounded. If your pool’s depth differs, adjust it in the volume calculator.

Frequently asked questions

How many gallons is a 18 × 52 ft oval pool?

About 22,000 US gallons (83,267 litres) with 4 ft of water.

How much salt does a 18 × 52 ft oval pool need?

About 587 lb (266 kg) to bring fresh water to 3,200 ppm, or 15 bags of 40 lb. Check your salt cell’s target first.

How much chlorine does a 18 × 52 ft oval pool need?

Each +1 ppm of free chlorine takes about 28 fl oz of 10% liquid chlorine. With stabilizer at 40 ppm, keep free chlorine around 4.6 ppm.

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