Salt addition
Calculate the estimated salt weight needed to move from current ppm to target ppm, with purity adjustment and bag conversion.
Pool salt calculator for clean, accurate saltwater maintenance.
Estimate salt addition, pool volume, and drain-and-refill dilution from one fast tool. Built for pool owners who want a practical result without clutter.
Free and ad-light
Brand-aware ppm presets
Imperial and metric units
Salt purity adjustment
Calculator
Pool salt calculator
Auto-calculates as you type.
Calculator
Pool volume calculator
Estimate gallons before adding salt.
Calculator
Pool salt dilution calculator
Estimate drain and refill volume.
Salt overflow mode
Volume estimate
Estimate pool gallons from simple rectangle, round, and oval dimensions in imperial or metric units.
Dilution rescue
If salinity is too high, estimate how much water to drain and replace to approach the target level.
Why this calculator is different
Built around the mistakes that make salt pools expensive.
Brand-aware targets
The brand selector makes the ppm target visible for common salt chlorine generator families such as Hayward, Pentair, Intex, and CircuPool. Treat these as practical presets and confirm the exact range in your equipment manual.
One workflow, fewer tabs
Volume, salt addition, bag conversion, purity adjustment, and drain-and-refill dilution are kept in one workflow so you can move from measurement to action faster.
Safer salt additions
The result area highlights a retest-first reminder because adding too much salt is harder to fix than adding the remaining amount later.
Recommended salt purity
For best predictability, use pool salt labeled near 99.8% purity. Product recommendations can be added later once affiliate links are configured.
FAQ
Practical pool salinity questions
How much pool salt do I need to add?
The amount depends on your pool volume, current salinity, target salinity, and salt purity. This calculator estimates the salt weight in pounds and kilograms, then converts it into common bag sizes.
What salt level should a saltwater pool use?
Many saltwater chlorine generators operate near 3000 to 3400 ppm, but the correct target depends on the equipment manual. Use the brand preset as a starting point and confirm with the manufacturer.
What should I do if I added too much salt?
Salt does not evaporate out of the pool. If the salt level is too high, the common correction is to drain a calculated portion of water and refill with fresh water, then retest.
Professional note
This calculator provides maintenance estimates for residential saltwater pools. It does not replace the manual for your salt chlorine generator, professional service advice, or local water safety requirements. Always circulate water and retest before making a second adjustment.