Pool Salt Calculator

How much salt does my pool need?

gal
ppm
lb

Order this much pool salt

400pounds of salt

Pounds = gallons × ppm rise × 8.34 ÷ 1,000,000. Your chlorine generator manual sets the target. Follow the product label if it differs. Add chemical to water, never water to chemical, and never mix chemicals.

400 lb of salt15,000 gal, +3,200 ppm
40 lb bags11
Rise3,200 ppm

Find the pounds and bags to reach your chlorine generator's target.

How it works

Pounds of salt equal gallons × ppm rise × 8.34 ÷ 1,000,000.

Before you order

  • Test current salt first, then enter only the rise you need.
  • Your generator manual sets the target. Many run near 3,000 to 3,500 ppm.
  • Add salt slowly with the pump running and brush it around until it dissolves.

Common questions

What salt should I use?

Use pool-grade salt with minimal additives so it does not stain or clog cells.

Can I overshoot?

High salt is hard to remove without draining water, so add less and retest.