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Calculating the Number of Gallons in Your Pool

How to Calculate

This formula is a good method of calculating how many gallons of water are in your Swimming Pool.

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To figure out the correct amount of chemicals to add to your pool, you first have to know how much water your pool can hold. Begin by calculating your pool's depth, then you can determine capacity by using the chart below.

CALCULATING POOL'S DEPTH:

Average Depth = Shallow End Depth + Deep End Depth / 2

RECTANGLE POOLS:
length x width x average depth x 7.5 = *total gallons

OVAL POOLS:
full width x full length x average depth x 5.9 = *total gallons

ROUND POOLS:
circular diameter x diameter x average depth x 5.9 = *total gallons

SLOPING SIDES:
if your pool has sloping sides, multiply the final figure by .85

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