Here is a list of 5 free online pool volume calculator websites. These sites help you calculate pool water capacity or volume based on the pool type, pool width, length, radius, and other details. Some of these pool capacity calculators also let you add shallow end and deep end level (in feet) for pool.
Most of the sites provide output or pool volume in gallons but one site also provides the result in liters and cubic feet. You will also enjoy some other interesting and unique features. For example, you can select pool shape (oval, rectangular, oblong, etc.), check pool diagram with diameter, length, etc., share pool volume calculation with others, and more.
Let’s check these online pool volume calculators.
Pentair is one of the good online options to calculate pool volume. The best part about this website is it supports four different pool shapes for pool volume calculation. These are: Oblong, Rectangle, Triangular, and Circular. You can first enter pool shallow end and deep end in feet and then select the pool type to find its volume. You can calculate pool volume for one pool type at a time, but the output comes good.
For each pool type, you need to enter different values. For example, if you are using Circular pool type, then you need to enter radius as the input value. If you are using Oblong pool type, then pool length, large diameter, and small diameters are needed as input values. A graph for each pool type is also provided to help you understand the shape and input values easily. So, the features are pretty good.
Inch Calculator website is a very good competitor to other pool volume calculators available on this list. It lets you calculate pool volume for oval, rectangular, circular, and oblong shaped pool. A separate tab is available for each pool shape to get the output.
Just enter inputs like pool length, deep depth, shallow depth, pool width, pool diameter, etc., and the result will be visible to you. The result shows pool volume in US gallons, liters, and cubic feet. This is a unique feature because most of the other sites provide output in gallons only.
Another good feature is you can share the result with others using the calculation link. So, these features make it a better pool volume calculator than others.
Pool Water Volume Calculator
Pool Water Volume Calculator (Homepage) is also a handy pool volume calculator. It brings two types of calculators. The first calculator is helpful for pools with rectangle, square, and oval shape and the second calculator is useful for the round swimming pool.
Use any calculator and enter input details like pool diameter, pool deep end, pool shallow end, pool width, etc., and you will get the pool volume calculation. The output comes in US and UK gallons.
Swimmingpool.com is an easier and very good website to calculate pool volume. You can calculate pool capacity in the number of gallons by entering the input options. The available options include pool length (in feet), width (in feet), depth number 1, and depth number 2 (or shallow end). Though depth #2 is optional, you can enter it to get the pool volume.
This website also lets you select pool shape which is also a good feature. Supported pool shapes are: triangle, circle, and rectangle. Select any shape, add details, and check the output. This is all you can do on this website for pool volume calculation.
The Pool Factory
The Pool Factory website is a fantastic pool volume calculator for oval pool and round pool. It also provides shapes for diameter, average depth, and short diameter for both pool types. Select a pool shape (oval or round) and then add inputs in feet. You can add long diameter, the deepest part of pool, the shallowest part of pool, and short diameter.
When inputs are added, use the CALCULATE button. After that, you will immediately get the pool volume (in US gallons) on the left part of its interface. You can also reset the input values and then check the pool volume for another pool shape.
Here I close this list which has the best free online pool volume calculator websites. All these sites are equally useful for finding out the pool volume capacity. However, if you want to calculate pool volume for different pool shapes, then the first website will be more useful.