Pool Ratio

12 × 24 ft pool: how many gallons?

A 12 × 24 ft pool with 3.5 ft shallow end, 6 ft deep end holds about 10,230 US gallons (38,737 litres). Here is what that means for salt and chemicals.

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

Volume
10,230 gal
38,737 litres · 3.5 ft shallow end, 6 ft deep end
Salt to 3,200 ppm (new salt pool)273 lb · 7 × 40 lb bags
10% liquid chlorine per +1 ppm13 fl oz
Stabilizer 0 → 40 ppm3.4 lb
Baking soda per +10 ppm alkalinity1.4 lb
Calcium chloride (77%) per +10 ppm20 oz

Open the chemical calculator for this pool →

The maths

  1. Average depth = (3.5 + 6) ÷ 2 = 4.75 ft
  2. Volume = 24 × 12 × 4.75 = 1,368 cu ft
  3. 1,368 cu ft × 7.48 gal per cu ft

= 10,230 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 12 × 24 ft pool?

About 10,230 US gallons (38,737 litres) with 3.5 ft shallow end, 6 ft deep end.

How much salt does a 12 × 24 ft pool need?

About 273 lb (124 kg) to bring fresh water to 3,200 ppm, or 7 bags of 40 lb. Check your salt cell’s target first.

How much chlorine does a 12 × 24 ft pool need?

Each +1 ppm of free chlorine takes about 13 fl oz of 10% liquid chlorine. With stabilizer at 40 ppm, keep free chlorine around 4.6 ppm.

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