How Many Gallons/Cubic Metres do I have?
24th August 2009

Many people are unsure of their own swimming pools capacity.

This can be a big problem when trying to work out dose rates for chemicals and sizing products for your pool. In the tablebelow we give the calculations inboth metric and imperial so it should be of use for people who use ‘old money’ or ‘new money’! (ft) or (m)

Circular Pools

Imperial – diameter (ft) x diameter (ft) x Average Depth (ft) x 4.9 = Gallons

Metric – diameter (m) x diameter (m) x Average Depth (m) x 0.8 = Cubic Metres

Oval Pools

Imperial – Long diameter (ft) x Short diameter (ft) x Average Depth (ft) x 5 = Gallons

Metric – Long diameter (m) x Short diameter (m) x Average Depth (m) x 0.9 = Cubic Metres

Rectangular Pools

Imperial – Length (ft) x Width (ft) x Average Depth (ft) x 6.23 = Gallons

Metric – Length (m) x Width (m) x Average Depth (m)  = Cubic Metres

I hope this is of help for you and in turn this should help you get you dose rates correct for your pool.


Deep End Pools is a trading name of CAW (Group) Limited registered in UK number 08775435. GB VAT Number 176900686