Tool

Pool Volume & Product Calculator

Find your pool's volume, then scale the dose printed on your product label to your pool.

1 · Pool volume

Length

Width

Average depth

Average depth = (shallow end + deep end) ÷ 2. Example: 3.5 ft and 8 ft → 5.75 ft.

Approximate volume

—US gallons

Formulas: rectangle = L × W × avg depth; round = π × (diameter ÷ 2)² × avg depth. × 7.48 gal per cubic foot, or × 264.17 gal per cubic meter. Freeform pools, sloped floors, and steps make this an estimate — your builder's documents are more exact.

2 · Scale the label dose

Copy the numbers from your product's label. Example: "Add 10 fl oz per 10,000 gallons to raise pH 0.2".

Product name

Amount on label

Dose unit

Per how many gallons (label)

gal

Pool volume (optional override)

gal

For — gallons

—

This tool only scales the dose your manufacturer printed — it doesn't choose a product or treatment. Your test results, the product's strength, and the label's instructions always win over this calculation. Many labels advise adding large corrections in portions and retesting in between.