How is pool volume calculated?

For a rectangular pool: length × width × average depth, converted to gallons or liters; irregular shapes use adjusted formulas.

Why use average depth for pools with varying depth?

Since most pools have a shallow and deep end, average depth gives a more accurate volume than using either extreme alone.

Why does pool volume matter beyond just filling?

It's essential for calculating correct chemical dosing since dosing is based on total water volume.

Pool Volume Calculator - CalculatorLabs.net

Pool Volume Calculator

Calculate how many gallons or liters your swimming pool holds.

Pool Shape

Length (ft) — or Diameter if Round

Width (ft) — ignored if Round

Average Depth (ft)

Volume (cubic feet) -

Volume (US Gallons) -

Volume (Liters) -

What Is the Pool Volume Calculator?

The Pool Volume Calculator estimates how much water your swimming pool holds, which you need for chemical dosing, filling time estimates, or heating cost calculations. It supports both rectangular and round pools.

Volume = Length × Width × Average Depth

Formula Used

Rectangular: Volume = Length × Width × Avg. Depth
Round: Volume = π × (Diameter÷2)² × Avg. Depth

1 cubic foot = 7.48052 US gallons = 28.3168 liters. Average depth should be the mean of the shallow and deep ends if the pool has a slope.

How to Use This Calculator

Select whether your pool is rectangular or round.
Enter the length (or diameter for round pools) in feet.
Enter the width in feet (skip for round pools).
Enter the average depth in feet, then click Calculate.

Worked Example

A rectangular pool 32 ft long, 16 ft wide, with an average depth of 5 ft has a volume of 32×16×5 = 2,560 cubic feet, which equals about 19,150 gallons (72,480 liters).