Revised planning calculator
Pool Volume Calculator
Regular rectangles, circles, and ellipses only. Use measured water dimensions and a representative average depth. Steps, shelves, irregular bottoms, kidney/freeform shapes, and attached spas need separate measurement.
Enter your measured values
Regular rectangles, circles, and ellipses only. Use measured water dimensions and a representative average depth. Steps, shelves, irregular bottoms, kidney/freeform shapes, and attached spas need separate measurement.
Use decimals, simple fractions such as 1/4, or grouped commas such as 10,000. Blank or invalid values never become defaults.
Method, supported products, and references
Rectangles use length × width × average depth. Circles and ellipses also use π/4. Cubic feet are converted to US gallons using 1728/231.
Testing and measurement
Start with reliable information
No test kit needed. You only need length, width, and average depth.
Keep the product label available, never mix pool chemicals together, and ask a qualified pool professional if you are unsure how to interpret a reading.
Companion Guide
How to Measure Your Pool's Volume in 5 Minutes
The companion guide remains available for background reading. Its examples are not a personalized dose or a substitute for product instructions.
Read the guide