Home Calculators Pool Salt Calculator

Pool Salt Calculator

Find exactly how much salt to add to your pool to reach the ideal saltwater chlorinator level — with bag counts and a live level gauge.

Pool Volume

Enter pool size directly, or calculate from dimensions

— or calculate from dimensions —

Current & Target Salt Levels

Test your water with a salt meter or test strips

0 7000

Recommended: 2700–3400 ppm · Ideal: 3200 ppm

Salt Level Gauge

Green band = ideal range (2700–3400 ppm)

0 ppm — ppm 7000 ppm
Too Low ✓ Ideal (2700–3400) Too High

Step-by-Step Calculation

How the salt amount was calculated

Salt to Add

pounds

Bags Needed

40 lb bags

Weight in kg

kilograms

ppm Increase

ppm needed

Pool Volume

gallons

Salt Addition Quick Reference (lbs needed per pool size)

Pool Size +500 ppm +1,000 ppm +1,700 ppm +3,200 ppm 0→3,200 ppm

Salt Pool Maintenance Tips

Adding Salt

Broadcast salt around the pool perimeter with the pump running. Allow 24 hours to circulate fully before retesting. Never add more than 1,000 ppm worth per day.

Lowering Salt

Salt cannot be chemically removed — only diluted. Partially drain and refill with fresh water, then retest. Drain 25% for roughly 25% reduction.

Testing Frequency

Test monthly with a digital salt meter for accuracy. Salt is depleted by backwashing, heavy rain, splash-out, and high bather loads. Test more often in summer.