Question 1

How do I calculate pool volume?

Accepted Answer

Rectangle: L × W × Avg Depth. For gallons, multiply cubic feet by 7.48. A 20×40ft pool at 5ft avg = 29,920 gallons.

Question 2

How many gallons is my pool?

Accepted Answer

Measure length, width, average depth in feet. Multiply together, then × 7.48. Common 16×32ft pool ≈ 20,000 gallons.

Question 3

Are US and UK gallons the same?

Accepted Answer

No! US gallon = 3.785 liters. UK (Imperial) gallon = 4.546 liters. UK gallon is about 20% larger. Same applies to pints and fluid ounces.

Question 4

What's the most accurate way to measure volume?

Accepted Answer

For precision: measure by weight and convert using density. For liquids at eye level: read at the bottom of the meniscus curve.

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