Pool calculators, done right.
The same math Skimmer runs for you automatically — free, instant, and available right here. No sign-up, no ads, just the numbers.
Estimate gallons or liters for rectangle, round, oval, or kidney-shaped pools.
Liquid chlorine or cal-hypo — dial in the dose to hit your target free chlorine, or shock a green pool.
Soda ash to raise pH, muriatic acid or dry acid to lower it — dosed to your exact pool volume.
Baking soda to raise TA, muriatic acid (aerate method) to lower it.
Calcium chloride to raise CH, an honest drain-and-refill calculation to lower it.
Stabilizer dosing to raise CYA, an honest drain-and-refill calculation to lower it.
Pool salt dosing to raise your salt level, drain-and-refill math to lower it.
Full water balance from pH, temperature, calcium hardness, and alkalinity in one score.
Estimate your pool's real yearly cost, per month and per swim season, with a breakdown.