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Swimming Pool Size Calculator

Capacity of Square or Rectangular Pools

In Cubic meters (Meteric)

Length in meters x Width in meters x Average Depth in meters = Volume in Metres cubed.

In Gallons (imperial)

Length in feet x Width in feet x Average Depth in feet x 6.25 = Volume in Gallons

Capacity of Circular Pools

Calculation Volume of Pool = Π(pi) x rx2 x d (Π(pi) = 3.14 , r = Radius, d = Average Depth)

In Cubic Meters (Meteric)

Radius in meters x Radius in meters x average depth in meters x 3.1428 = Volume in metres cubed

In Gallons (Imperial)

Radius in feet x Radius in feet x average depth in feet x 6.25 x 3.1428 = Volume in gallons

Typical Volumes For Circular Above Ground Pools with an average depth of 39 Inches (1 meter)

Diameter In Feet

Diameter In Meters

Volume in Gallons

Volume in M3

10

3.048

1600

7.29

12

3.65

2301

10.46

15

4.57

3608

16.40

18

5.48

5187

23.58

Volume Conversion

220 gallons = 1 M3 = 1000 litres

Swimming Pool Dosing Rates

Dosing rates are expressed in Metric Units, we recommend that a suitable dedicated graduated plastic jug is used to measure liquids and a digital scales that measures in grams is used for accurate measurement of powders.