Everyday & Conversions
Pool Salt Dose Calculator
Calculate how much salt to add to reach the target salinity level for a saltwater pool.
Your inputs
Change any value to update the result instantly.
Salt needed
4,500 lb
ppm increase needed
2,700 ppm
40 lb bags required
112.5 bags
Pool volume
20,000 gallons
Formula and working
lbs salt = gallons × (target ppm − current ppm) ÷ 120,000 × 100
- 1
Collect the inputs
Pool volume = 20,000 gallons; Current salt level = 500 ppm; Target salt level = 3,200 ppm
- 2
Apply the formula
lbs salt = gallons × (target ppm − current ppm) ÷ 120,000 × 100
- 3
Result
Salt needed = 4,500 lb
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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