Our Gallons Calculator is a tool you can use to estimate the amount of water in a pool which should aid in how much chemicals you will need.

Remember this calculator calculates gallons of water. Therefore, the ShallowEnd Depth and DeepEnd Depth should be water depth, not finished depth!

Keep in mind, that chlorine is sold in 10,000 gallon increments, and all other pool chemicals are sold in 5,000 - 10,000 gallon increments. So, if you have a pool shape that is different than what is listed below, just figure a rectangle around your pool by the longest length and the widest width. That should get you close enough to know how much chemicals to purchase.

Shape of Pool
Overall Width feet inches
Overall Length feet inches
ShallowEnd Depth feet inches
DeepEnd Depth feet inches
ShallowEnd Length feet inches