Pool Salt Calculator
Calculate how much salt to add or how much water to replace for optimal pool salinity
Pool Salt Level Calculator
Pool Volume
Salt Concentration Levels
Calculation Results
Add Salt to Pool
How to Use This Calculator
Measure Your Pool
Enter your pool volume. Use our presets for common pool sizes or measure your specific pool dimensions.
Test Current Salt Level
Use a salt water test strip or digital tester to measure your current salt concentration in ppm.
Set Target Level
Choose your desired salt level. 3200 ppm is optimal for most pools (acceptable range: 2700-3400 ppm).
Follow Results
Add the calculated amount of salt or replace the specified amount of water with fresh water.
Salt Level Guide
Pool Maintenance Tips
Test Weekly
Check salt levels every 7 days during swimming season
Add Salt Gradually
Add salt in small amounts, test, then add more if needed
Circulation is Key
Run pump for 8-12 hours after adding salt to ensure mixing
Use Pool Salt
Only use salt specifically designed for pools (99.8% pure)
Common Pool Sizes
Understanding Pool Salt Levels
Why Salt Levels Matter
- •Chlorine Generation: Salt chlorinators need proper salt levels to produce chlorine effectively
- •Equipment Protection: Correct levels prevent damage to pool equipment and surfaces
- •Water Quality: Proper salinity ensures clean, clear, and safe swimming water
- •Comfort: Balanced salt levels feel better on skin and eyes
Fun Fact: Ocean water has about 35,000 ppm salt, while pools only need 3,200 ppm - much gentler on your body!
Effects of Incorrect Levels
Too Low (< 2700 ppm)
- • Insufficient chlorine production
- • Increased risk of algae and bacteria
- • Chlorinator warnings or shutdowns
Too High (> 3400 ppm)
- • Corrosion of metal components
- • Damage to pool surfaces
- • Excessive chlorine production
- • Higher chemical costs
Salt Addition Guidelines
Small Pool
5,000-10,000 gal
~40-80 lbs initial salt
Medium Pool
15,000-20,000 gal
~120-160 lbs initial salt
Large Pool
25,000-30,000 gal
~200-240 lbs initial salt
Cost
$0.15-0.25/lb
Pool-grade salt