Pool Salt Calculator
Calculate how much salt is needed to achieve the ideal salt level in your pool based on pool volume, current salt level, and target salt level.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Pool Salt Calculator
This calculator determines how many pounds of salt you need to add to your pool to reach a desired salt level.
Step 1: Enter your pool's volume in gallons (e.g., 20000).
Step 2: Enter your current salt level in ppm (e.g., 2500).
Step 3: Enter your target salt level in ppm (e.g., 3200).
Step 4: Select your salt type (Pure, Diamond Crystal, or Morton). This adjusts for purity.
Step 5: Click "Calculate Salt Needed".
The result shows the exact pounds of salt required. If current salt exceeds target, no salt is needed—consider dilution.
Note: All inputs must be positive numbers. Volume is in US gallons; salt levels are in ppm.
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Frequently Asked Questions
Most saltwater pools operate best with a salt level between 2700 and 3400 ppm (parts per million). Check your salt chlorine generator manual for the exact recommended range.
You can measure salt level using test strips, a digital salt meter, or by taking a water sample to a pool store. Test regularly to maintain proper levels.
It is recommended to use pool-specific salt that is at least 99% pure sodium chloride. Avoid salt with additives like iodine or anti-caking agents, as they can stain or damage pool equipment.