Rule of Thumb Formula

How Many Bags of Salt for Your Pool? (Quick Reference)

As a rule of thumb, each standard 40-lb bag of salt adds approximately 480 PPM per 10,000 gallons. To raise an existing pool by 500 PPM, add 1 bag per 10,000 gallons.

Adjust Pool Parameters
Required Salt Dose
40-lb Salt Bags
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20kg Bags
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Chemical Addition Protocol
1 Turn off salt chlorinator (SWG) cell for 24 hours while salt dissolves.
2 Scatter salt bags evenly around the perimeter deep end. Never dump in skimmer.
3 Brush floor with pool brush until dissolved; run pump continuously for 24 hours.

Salt Dose by Starting Salinity Level

Current Salt PPM PPM Needed Total Salt (lbs) 40-lb Bags Needed Total Salt (kg)

Frequently Asked Questions

How much does one 40 lb bag of salt raise pool salinity?
In a 10,000-gallon pool, one 40-lb bag raises salinity by 480 PPM. In a 15,000-gallon pool, it raises salinity by 320 PPM. In a 20,000-gallon pool, it raises salinity by 240 PPM.

Other Common Pool Volumes & Salt Calculators