Pool Salt Calculator
Calculate the exact amount of pool salt to add for your salt chlorine generator (SWG) pool.
Salt Calculator
For salt chlorine generator pools
Typical Range: 3,000 - 3,400 ppm
Salt level requirements vary by generator. Check your owner's manual for the recommended range. Too little salt = low chlorine output. Too much = potential equipment damage.
Pool Volume
20,000 gallons
Common Salt Generator Ranges
Amount to Add
116 lbs
Pool Salt
3 x 40lb bags
(120 lbs total)
Tips
• 83 lbs per 10,000 gallons raises salt by 1000 ppm
• Broadcast salt around pool with pump running
• Wait 24 hours for salt to fully dissolve before retesting
• Approximately 3 x 40lb bags needed
About Salt Chlorine Generators
Salt chlorine generators (SWG) convert salt into chlorine through electrolysis. Despite the name, salt pools aren't "chlorine-free" - they generate chlorine on-site. Most systems require 2700-3400 ppm salt, much lower than ocean water (35,000 ppm).
Why Salt Level Matters
Too low: Generator can't produce enough chlorine, may show low salt error.
Too high: Can damage the salt cell, cause over-chlorination, corrosion.
Using the Right Salt
Always use pool-grade salt (sodium chloride). Avoid table salt, rock salt, or water softener salt as they may contain additives that can stain your pool or damage equipment. Look for 99.4% pure or higher.