Pool Salt Calculator

Estimate the amount of salt needed based on pool volume, current salinity and your target salt level.

How the pool salt calculator works

Estimated salt (pounds) = (target ppm − current ppm) × pool gallons × 8.34 ÷ 1,000,000, with no addition when the target is already met or exceeded. Follow the salt-system manufacturer’s target range and product directions.

Frequently asked questions

How much salt does a pool need?

It depends on pool volume and the difference between the current and target salt concentration. Check the chlorinator manufacturer’s recommended range first.

Does this account for salt already in the water?

Yes. Enter the current measured salt level; the calculator estimates only the additional amount needed to reach the target.

Results are estimates for general information only. They are not a substitute for professional advice where applicable. Found a mistake? Report an error.