Pool Ratio

33 ft round pool: how many gallons?

A 33 ft round pool with 4 ft of water holds about 25,590 US gallons (96,877 litres). Here is what that means for salt and chemicals.

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

Volume
25,590 gal
96,877 litres · 4 ft of water
Salt to 3,200 ppm (new salt pool)683 lb · 18 × 40 lb bags
10% liquid chlorine per +1 ppm33 fl oz
Stabilizer 0 → 40 ppm8.5 lb
Baking soda per +10 ppm alkalinity3.6 lb
Calcium chloride (77%) per +10 ppm49 oz

Open the chemical calculator for this pool →

The maths

  1. Area = π × 16.5² = 855.3 sq ft
  2. Volume = 855.3 × 4 = 3,421 cu ft
  3. 3,421 cu ft × 7.48 gal per cu ft

= 25,590 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 33 ft round pool?

About 25,590 US gallons (96,877 litres) with 4 ft of water.

How much salt does a 33 ft round pool need?

About 683 lb (310 kg) to bring fresh water to 3,200 ppm, or 18 bags of 40 lb. Check your salt cell’s target first.

How much chlorine does a 33 ft round pool need?

Each +1 ppm of free chlorine takes about 33 fl oz of 10% liquid chlorine. With stabilizer at 40 ppm, keep free chlorine around 4.6 ppm.

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