Calculating the Volume (Gallonage) of Your Swimming Pool

Knowing the volume of water (in gallons) in your swimming pool is important in all areas of swimming pool maintenance and chemical applications. It is also vital to know when choosing the appropriate pool equipment for your swimming pool. Simply stated, the volume of your pool is a calculation of your swimming pool's dimensions multiplied by your pool's average depth. What follows is a chart designed to help you estimate the gallonage in your style swimming pool. After that we have posted many of the most common dimensions with their calculated gallonage.

Chart To Estimate Gallonage of Swimming Pools

• Average Depth = depth at the deep end + the depth at the shallow end / 2.
• Rectangular Pools - Multiply length x width x average depth x 7.5 = gallons
• Round Pools - Multiply diameter x diameter x average depth x 5.9 = gallons
• Oval Pools - Multiply full width x full length x average depth x 6.7 = gallons
• Irregular shapes and size pools capacity should be determined by your pool builder or specialist.
• If your pool has sloping sides, multiply your final figure of gallonage by 0.85 for correct gallonage.

Round Pools 48" Deep 15ft - 5310 Gallons 18ft - 7646 Gallons 21ft - 10,407 Gallons 24ft - 13,593 Gallons 27ft - 17,204 Gallons 28ft - 18,502 Gallons

Above Ground Ovals 48" Deep 12x24 - 4502 Gallons 15x24 - 9648 Gallons 15x25 - 10,050 Gallons 15x30 - 12,060 Gallons 16x24 - 10,291 Gallons 16x32 - 13,721 Gallons 18x33 - 15,919 Gallons 18x36 - 17,366 Gallons 15x41 - 16,482 Gallons

*Common Inground Sizes* 16x32 - 19,200 Gallons 16x34 - 20,400 Gallons 16x36 - 21,600 Gallons 18x36 - 24,300 Gallons 20x40 - 30,000 Gallons 24x44 - 39,600 Gallons *avg depth figured at 5ft.