How much salt does my pool need?

Most saltwater pools need 2,700-3,400 ppm (parts per million) of salt, equivalent to about 9 pounds of salt per 1,000 gallons. New pool conversion typically requires 200-500 pounds of salt depending on pool size. Test regularly and adjust as needed.

What type of salt should I use in my pool?

Use high-purity pool salt (sodium chloride) that's at least 99% pure. Avoid table salt (has additives), rock salt (impurities), or water softener salt (may have anti-caking agents). Pool-grade salt dissolves cleanly and works best with chlorine generators.

How often do I need to add salt to my pool?

Salt doesn't evaporate or get consumed like chlorine. Add salt only when water is added (after heavy rain, backwashing, draining) or if testing shows low levels. Check salt levels monthly and after adding significant water.

Can I convert my chlorine pool to saltwater?

Yes, install a salt chlorine generator system and add appropriate amount of pool salt. Benefits include softer water, lower operating costs, and consistent chlorine levels. Initial conversion costs $1,500-2,500 including equipment and salt.

What if my salt level is too high?

If salt level exceeds 4,000 ppm, partially drain the pool and refill with fresh water. There's no chemical way to remove excess salt. High salt can damage equipment and make water cloudy. Test before adding more salt.

Home & Construction

Pool Salt Calculator

Calculate salt needed for saltwater pools.

Pool Volume (Gallons)

Current Salt Level (ppm)

Target Salt Level (ppm)

Standard is usually 3000-3400 ppm

Enter pool details

How to Use This Calculator

Calculate Pool Volume

Determine your pool volume in gallons. For rectangular pools: length × width × average depth × 7.5. For circular pools: diameter × diameter × depth × 5.9. Or check pool documentation.

Test Current Salt Level

Use salt test strips or electronic tester to measure current salt concentration in ppm (parts per million). For new conversions, current level is 0 ppm.

Enter Pool Details

Input pool volume in gallons, current salt level, and desired salt level (typically 3,200 ppm). The calculator determines how many pounds of salt to add.

Add Salt and Circulate

Pour calculated amount of salt around pool perimeter. Run pump for 24 hours to fully dissolve and distribute. Retest after 24 hours and adjust if needed. Salt dissolves slowly—don't rush.