To figure the volume of oval, circular, square or rectangular, and irregular or free-form pools, see “Formulas” (below) or use a smartphone app. (If you must estimate, be sure not to underestimate.) For simplicity, make your measurements in feet and tenths of feet to keep the calculations in easy decimal form.Naturally, the pool’s shape will determine which equation to use to calculate the volume in total cubic feet. Don’t be too concerned about absolute accuracy because close estimates will be adequate for these equations. If you don’t have the specs handy, measure the pool. Pool volume: To determine pool volume (the amount of space measured in cubic feet), you’ll need the basic pool dimensions. Pool volume x 7.48 = pool capacity in gallonsįlow rate per hour ÷ 60 = flow rate per minute * To find the average depth of a slope-floored pool, measure the depths at both ends, add them together and divide by 2. To be more precise, measure the pool with a planimeter,īut that’s not necessary a close estimate is all that’s needed. Radius x radius x 3.14 (pi) x average depth = pool volumeįree-form or irregular pool: Use the equation for an oval or rectangle,Īs needed. Length x width x average depth* = pool volumeġ/2 length x 1/2 width x 3.14 (pi) x average depth = pool volume
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