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Longer reads that start from a real question — how much water a pool holds — and point back to the calculator and the how-to guides.

Typical volumes for compact, family and lap pools in litres, cubic metres and gallons, and why measuring beats guessing.

Measure length, width, diameter and average depth accurately, including sloped floors, steps and freeform outlines.

The exact formulas this calculator uses for rectangular, circular, oval and irregular swimming pools, with worked examples.

Convert pool volume between litres, cubic metres, US gallons and imperial gallons using the official litre definitions.

How pool volume drives sanitiser dosing, filter runtime and water testing — a practical maintenance primer.