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Thread: Calculating pool volume

  1. Back To Top    #1

    Join Date
    Sep 2011
    Atlanta Ga

    Calculating pool volume

    My pool is oval, 36' x 18', 8.5' in the deep end, 3.5' deep in the shallow end. I used this calculator to calculate the volume.
    It gives me 22843.33 gallons which I used in the pool calculator. However the pool has very little shallow end, and quickly gets deep because there is a diving board. The pool calculator always told me I needed less chemicals that I really needed. I think the pool volume is higher than what the calculator says. I think it is closer to 27000 gallons, based on an average depth of 7 feet. I have put that number into the pool chemical calculator and will see how accurate that is. I also changed the info in my signature, listing the pool as 27000 gallons.

    Does this seem reasonable? Is there any more accurate and flexible pool water volume calculator you know of?
    36 x 18 oval pool, inground, plaster pool.
    27000 gallons
    1 hp pump. Sand filter
    Pool built in 1971.

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Calculating pool volume

    Pool Calculator seems to be the best method, actually. See what happens when you use your new figure. If it overdoses, back off 1000 gallons and see what that does for you. It takes a few weeks of back-and-forth, but eventually you'll get it figured to within 200 gallons or less.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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