Saltwater Pool Salt Calculator

Calculate exactly how much salt to add to your saltwater pool. Supports US (gallons/lbs) and metric (liters/kg) units.

Calculate exactly how much salt to add to your saltwater pool — US or metric. Fast, accurate, free, and works offline. Detailed description Stop guessing how much salt your saltwater pool needs. Salt Calculator tells you the exact amount of pool salt to add to hit your target level — in seconds, right from your browser toolbar. Enter your pool volume and your current and target salt readings, and it does the math for you, down to the number of bags. No more overshooting (and draining the pool to fix it) or adding too little and running your salt cell low. WHAT IT DOES • Calculates the precise amount of salt to add to reach your target ppm • Tells you how many bags that is (40 lb in US mode, 20 kg in metric) • Warns you when your salt is already too high and explains how to bring it down • Confirms when you're already on target — no salt needed KEY FEATURES • US and metric units — gallons & pounds, or liters & kilograms • Built-in pool volume estimator — enter length, width, average depth and pick your pool shape • Sensible default target of 3,200 ppm (typical SWG range 2,700–3,400 ppm) • Clean, fast popup — no account, no sign-up, no ads • Works completely offline — your numbers never leave your device HOW TO USE IT — 5 quick steps WHO IT'S FOR — saltwater pool owners, service techs, SWG users ABOUT — brought to you by Florida's Best Pools → https://floridasbestpools.com NOTE — results are estimates; always confirm with a test strip/meter