Pool Volume Calculator

Find how many gallons your pool holds — the number you need for chemical dosing, salt and pump sizing.

Same as shallow end for a flat-bottom pool.

Pool volume

18,193 gallons

  • Liters68,867 L
  • Cubic feet2,432 ft³
  • Surface area512 ft²
  • Average depth4.75 ft

Estimates only. Round up when you order, and confirm structural details with your local building code.

How to use it

  1. Pick the pool shape.
  2. Enter the dimensions.
  3. Enter shallow and deep end depths (use the same number for a flat bottom).

The formula

Rectangle = length × width × average depth × 7.48

Round = π × radius² × average depth × 7.48

Oval = π ÷ 4 × length × width × average depth × 7.48

Worked example

Pool shapeRectangle
Length32 ft
Width16 ft
Shallow-end depth3.5 ft
Deep-end depth6 ft

Result

Pool volume18,193 gallons
Liters68,867 L
Cubic feet2,432 ft³
Surface area512 ft²
Average depth4.75 ft

Tips before you order

  • Measure the water depth, not the wall height.
  • Above-ground pools are usually filled to about 6 in below the top rail.

Questions

How many gallons is a 16×32 pool?

About 18,200 gallons with a 3.5–6 ft depth (4.75 ft average).