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Easily calculate your water tank requirement by filling in our calculator below, then simply contact us online or call 1800 422 635.

The Water Tank Calculator contains two tabs

  1. Water Usage - The water usage tab will allow you to calculate how much water you use a day on average - you may be surprised!
  2. Size of Water Tank - Input information about roof area and average rainfall and the calculator will show your minimum water tank size. To access average rainwater data, click here.

To view the full range of Camel Rainwater Tanks available for purchase, click here.

Activity Times Per Day Units Ltr Per Day Ltr Per Yr
Shower 15 litres per minute    
Bath 150 litres
Dishwasher 30 litres per load    
Front Load Washing Machine 80 litres per load    
Top Load Washing Machine 100 litres per load    
Brushing Teeth with tap running 5 litres    
Litres per day
Litres per year

Roof Area (Square Metres)
Average Annual Rainfall (mm)
Amount of rain harvested (litres)
Assume the tank can fill 3 times per year (Depends on rainfall and usage patterns)
Minimum Tank Size

Rain harvested
Tank size
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