Discount Above Ground Pool Heaters

Pool owners often wonder how much water is actually in their above ground swimming pools. They may simply be curious about it or they may need to know the pool volume in order to some size equipment.

It is a simple question to answer for yourself, providing you remember your elementary school math education and the formulas for calculating volumes. Other than that, all you need to know is that there are 7.48 gallons per cubic foot.

The equation for calculating the area of a circle is 'Pi * r^2/2', where Pi is 3.14 (well, not exactly but that's close enough) and the radius (r) is one half of the pool's diameter. To calculate the volume it is simply a matter of multiplying the area by the depth (or height) to get the pool volume in cubic feet. Lastly, since there are 7.48 gallons per cubic foot, multiply the pool's volume (in cubic feet) by that number to get your volume in gallons.

The table below has the pool volume for some common round and oval above ground pools. Please note that the volume presented in this table, in gallons, assumed that the pool would be filled within 4" of the sidewall height so the water height of a 48" sidewall pool is 44" for the pool volume's calculation.

Pool Volumes by Size

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