Home & Construction
Pool Volume Calculator - Calculate swimming pool water volume
Calculate swimming pool water volume
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
How to calculate average depth?
For sloped bottom: (Shallow + Deep) / 2. For hopper: use weighted average based on section lengths.
How long to fill a pool?
A garden hose delivers ~9 GPM. 15,000 gallon pool ≈ 28 hours. Use multiple hoses or truck delivery.
How much chlorine to add?
About 1 lb of chlorine per 10,000 gallons to raise level by 1 ppm. Start with 2-3 ppm.
Related tools
About this tool
Inputs
- Pool Shape
- Length
- Width
- Shallow End Depth
- Deep End Depth
- Bottom Type
- Rectangle
- Round
- Oval
- Kidney
- Freeform
- Constant
- Slope
- Hopper
- N/A
Results
- Volume
- Fill Time (garden hose)
- Initial Chlorine
Quick mental math is convenient, but it introduces errors. The Pool Volume Calculator eliminates that risk by computing the exact result from your inputs. The required inputs are pool shape, length, width, shallow end depth, deep end depth, bottom type, rectangle, round, oval, kidney, freeform, constant, slope, hopper and n/a. Once provided, the result — volume, volume, volume and other key metrics — appears instantly. Concrete volume in cubic yards = (length × width × depth in feet) ÷ 27.
Accurate material estimates prevent both expensive overbuying and frustrating mid-project shortages. Factor in door and window openings, which reduce the material needed for walls. Having a dedicated tool to calculate swimming pool water volume saves time you would otherwise spend searching for formulas or setting up a spreadsheet. If the result surprises you, revisit your inputs — a mistyped digit or wrong unit is usually the culprit. Measure twice, order once — re-measuring saves far more than the few minutes it costs.