Calculate exactly how many pounds (or kg) of salt your pool needs to reach optimal salinity.
Imperial (Gallons / Lbs)
Metric (Liters / Kg)
Recommended Salt Addition
0 lbs
How to Use the Pool Salt Calculator
Maintaining the correct salinity is crucial for your Saltwater Chlorine Generator (SWG) to function efficiently. Most salt cells operate best between 3,000 and 3,400 ppm (parts per million), with 3,200 ppm being the industry standard sweet spot.
Step-by-Step Instructions:
Test Your Water: Use a digital salt meter or salt test strips to find your current ppm. Don't rely on the SWG control panel alone, as these can drift over time.
Know Your Volume: Enter your pool's total capacity. If you aren't sure, a standard rectangular pool is Length x Width x Average Depth x 7.5.
Set Your Target: Consult your salt cell manual. Most modern systems prefer 3,200 ppm.
Calculate and Add: Our calculator will tell you the total weight needed. Always add salt to the shallow end and brush it around until dissolved.
Ideal Salt Levels Reference Table
Status
Salt Level (ppm)
Action Required
Too Low
0 – 2,500
Generator will shut down to protect the cell. Add salt immediately.
Low Range
2,500 – 3,000
Generator may work inefficiently. Add salt to reach 3,200.
Ideal
3,000 – 3,400
Perfect range for most salt chlorine generators.
High Range
3,500 – 4,500
Monitor closely. Most cells still work, but it may shorten cell life.
Too High
4,500+
Risk of corrosion. May require partial draining and refilling with fresh water.
Calculation Example
If you have a 20,000-gallon pool with a current reading of 1,500 ppm and want to reach 3,200 ppm: