Volume calculator

Pool volume

Rectangle, circle, oval, kidney, variable-depth and metric calculations.

A pool water sample and testing kit beside clear blue pool and spa water

Your measurements

Enter known values

Values stay in this browser. No chemistry details are sent anywhere.

Calculated planning amount

17,673 US gal

66,899 L · calculated confidence

Before actingMeasure first. Follow the product label. Add chemicals separately; circulate and retest.
Formula
length × width × average depth
Assumptions
Average depth is (shallow + deep) ÷ 2. Complex floor and shell geometry can change actual volume.
Source
Volume methodology · verified July 22, 2026

How to use this result

A planning quantity, not an instruction to pour.

1. Verify

Recheck volume, test reading, product strength, density or purity, and the selected target.

2. Read the label

Use the label’s application method, protective equipment, maximum dose, spacing, and re-entry directions.

3. Add separately

Never combine chemicals. Add one product at a time with circulation as directed.

4. Retest

Start with the staged amount, allow the label-directed circulation time, and measure again.