Water Tank Volume Calculator
Work out what size your rainwater tank is — choose the shape closest to yours.
Use the calculators below to work out the size of your rainwater tank. Choose the shape closest to your tank. To estimate how much water is currently in the tank, replace the height with how deep the water level is.
Round tank
Volume: —
Rectangular / square tank
Volume: —
Looking for a filtration system or replacement filters?
Pristine Water Systems looks after your water management, from the tank through to your taps — a wide range of filtration, UV sterilisation and replacement cartridges. Our technicians can help you select the right filter for your situation.
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Ready for clean, safe tank water?
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