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Pump Sizing Tool
Pool Pump Size Calculator
Answer a few quick questions and we'll recommend the right pump size (HP & kW) for your pool — plus which pump type suits you best.
Tell us about your pool & setup
Takes about 30 seconds. All fields below.
1
Enter your pool volume in litres. Don't know it? Use the quick estimator.
Pool Volume Estimator
Choose your pool shape and enter the dimensions in metres.2
How many hours per day you want to filter the full pool volume.
3
The diameter of the suction pipe feeding the pump.
4
Approximate one-way pipe run from the pool to the pump (metres).
5
Is the pump below the pool water line (flooded suction) or above it?
6
Different filters add different resistance (head loss) to the system.
7
A heater plumbed in line adds extra resistance to the system.
Recommended Pump Size
—
—
Required Flow Rate
—
litres / hr
Est. Total Dynamic Head
—
metres of head
Turnover
—
full filtration cycle
Choose your pump type
All three options below are filtered to your recommended size. Pick the balance of price, energy use and noise that suits you.
Please note: This calculator provides an estimate based on common pool setup assumptions, including a standard allowance for pipe fittings and elbows. Individual pool installations vary, and factors such as the number of bends, additional features, and existing equipment can affect the actual pump size required. For the most accurate recommendation, please confirm with your pool specialist or pump manufacturer before purchasing.