Pool Salt Calculator
Work out how much salt to add to your pool. Enter your pool volume and current and target salt levels, and the calculator returns the kilograms of salt (and 20kg bags) to add.
How we estimate this
Salt chlorinators need a target salinity, usually 3,000 to 4,000 ppm, check your unit. To raise salinity, you add roughly 1kg of salt per 1,000 litres for every 1,000 ppm increase. Add it in stages and let it dissolve.
Pricing reviewed: October 2026.
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Pricing reviewed October 2026. Indicative Australian costs, not a quote.
Understanding pool salts in Australia
Salt chlorinators need a target salinity, usually 3,000 to 4,000 ppm, check your unit. To raise salinity, you add roughly 1kg of salt per 1,000 litres for every 1,000 ppm increase. Add it in stages and let it dissolve.
Test the water first so you know your current level, then only add the difference. If you overshoot, the only fix is to dilute by draining and refilling, so add conservatively.
Frequently asked questions
How much salt do I need for my pool?
Roughly 1kg per 1,000 litres to raise salinity by 1,000 ppm. Enter your volume and current and target levels for the exact amount, and add it in stages.
What salt level should my pool be?
Most salt chlorinators want 3,000 to 4,000 ppm, but check your unit, running too low or too high reduces chlorine output or damages the cell.
Are you a pool / pool-shop business?
Everyone on this page is working out what pool salt costs because they are ready to hire. Put your business right beneath the calculator, in your state, so you are who they find. From $50/mo.