Swimming Pool Volume Calculator
Calculate the volume of water in your swimming pool
About this calculator
A swimming pool volume calculator helps you determine the exact amount of water your pool holds, which is essential for proper chemical treatment, heating costs, and maintenance planning. Whether you have a rectangular, circular, or oval pool, knowing the precise water volume ensures you add the right amount of chlorine, shock treatments, and other chemicals. This tool saves you from guesswork and helps maintain proper water balance for safe, clean swimming conditions.
How to use
Simply enter your pool's dimensions including length, width, and average depth for rectangular pools, or diameter and depth for circular pools. Select your measurement units (feet or meters) and the calculator will instantly provide the volume in gallons or liters. For irregularly shaped pools, break them into sections and calculate each area separately.
Frequently asked questions
How do I measure the average depth of my pool?
Add the shallow end depth and deep end depth, then divide by two. For pools with gradual slopes, take measurements at several points.
What's the difference between gallons and liters for pool volume?
One gallon equals 3.785 liters. Most pool chemicals in the US use gallon measurements, while metric countries use liters.
How often should I recalculate my pool volume?
Pool volume remains constant unless you modify the pool structure. Calculate once and use that number for all chemical and maintenance calculations.