How many gallons is my pool?

Multiply length × width × average depth in feet, then by 7.48 gallons per cubic foot. A 30×15 pool averaging 5 feet holds about 16,800 gallons.

How do I find average pool depth?

Add the shallow-end and deep-end depths and divide by two for a simple rectangular pool.

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Gallons of water in your pool.

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Length (ft)Width (ft)Average depth (ft)

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How many gallons is my pool?: Multiply length × width × average depth in feet, then by 7.48 gallons per cubic foot. A 30×15 pool averaging 5 feet holds about 16,800 gallons.
How do I find average pool depth?: Add the shallow-end and deep-end depths and divide by two for a simple rectangular pool.