Free to use, no account
Pool salt calculator
Estimate salt for a pool from its water volume, measured current salinity and the target listed by your salt system manufacturer.
How much salt should I add to my pool?
Enter the pool volume, the measured current salinity and the target specified for your salt system. The calculator estimates the salinity increase, adjusts for salt purity and can round up to whole bags. It does not choose a target or test your water.
Frequently asked questions
How much salt should I add to my pool?
Enter the pool volume, the measured current salinity and the target specified for your salt system. The calculator estimates the salinity increase, adjusts for salt purity and can round up to whole bags. It does not choose a target or test your water.
Are my pool details uploaded?
No. This estimate runs in your browser and does not send your pool details to a server.
Does this calculator choose the right salt target?
No. Use the target in your salt chlorinator manual and verify current salinity with a suitable water test.
What happens when current salinity is already at the target?
The estimate shows zero salt to add when the target is at or below the entered current salinity.