How to Calculate Pool Volume — Gallons & Liters Guide | PoolDose

Complete guide to calculating swimming pool volume for rectangular, round, oval, L-shape, and freeform pools. Learn how many gallons your pool holds.

How to Use the Pool Volume Calculator

Select your pool shape (rectangular, round, oval, L-shape, or freeform) and enter the dimensions. The calculator uses the average of your shallow and deep end depths to compute volume.

The calculated volume is automatically shared with all other chemical calculators on PoolDose. Calculate your pool volume first for accurate chemical dosing results.

Both US units (feet/gallons) and metric units (meters/liters) are supported. For freeform pools, the estimate may vary by 5-10% from actual volume.