# How to Compute the Square Footage of a Swimming Pool

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Calculating the square footage needed for a swimming pool will help you understand the amount of space needed to put in an above ground or in-ground swimming pool. It is also a first step to calculating the volume of the pool. Pool shapes include rectangular, square, round, L-shaped or oval. Measuring the square footage will help you decide what type of pool fits in the space you have available.

## Step 1

Measure the length of the rectangular or square pool. Measure the width. Multiply the length by the width of the pool to find the square footage. For instance, 15 feet (length) times 12 feet (width) equals 180 square feet.

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## Step 2

Measure a round pool across to find the radius, which is half the diameter. Find the square footage by multiplying the radius times the radius times 3.14 (pi). For instance, 14 feet (radius) times 14 feet (radius) times 3.14 (pi) equals 615.44 square feet.