Pool-Calculator

If you love Pool Calculator, please help us spread the word by leaving a review!

Looking for help with calculations for your swimming pool or hot tub chemistry? The Pool Calculator does all the math for you, making testing and treating your pool or hot tub a breeze.

Pool Calculator tells you exactly how much of each chemical to add to keep your water in balance and crystal clear. No more puzzling over complicated charts and formulas.

Bring your Android phone or tablet out to the pool and have all the chemical information and calculations you need right at your fingertips.

Pool Calculator provides a complete tool kit to make pool care easy. You get:
• Chemical Calculators
• Volume Calculator
• Effects (What-if) Calculator


CHEMICAL CALCULATORS
You can use whichever test strip or test kit you prefer for testing your pool or hot tub. Pool Calculator provides calculations for:
- Chlorine (FCl)
- Raising pH
- Lowering pH
- Total alkalinity (TA)
- Calcium hardness (CH)
- Stabilizer (CYA or cyanuric acid)
- Salt
- Borate (Borax)
- Calcium saturation index (CSI, similar to LSI)

RECOMMENDED CHEMICAL RANGES
With Pool Calculator, the recommended ranges for your chemicals are based upon whether you have a pool or hot tub, and the surface material (plaster, vinyl or fiberglass) of your pool or hot tub. You can choose from several pre-defined ranges or customize based on your preferences.

POOL VOLUME CALCULATOR
To keep your swimming pool or hot tub at its best, it’s important that you accurately calculate your water volume. All of the chemical balancing recommendations you receive from the Pool Calculator are based on it. You can calculate the volume of your pool in metric units (liters) or in imperial units (gallons). The Pool Volume Calculator can be used for:
• Rectangular Pools and Hot Tubs
• Oval Pools and Hot Tubs
• Round Pools Hot Tubs

CHEMICAL EFFECTS CALCULATOR
“What if” analysis for adding chemicals to your pool or hot tub! Ever want to know the impact of adding a given amount of Chemical has on your swimming pool or hot tub chemistry?

The Effects Calculator calculates the impact adding a specific amount of chemical has on your pool chemistry. It does this not only for the primary purpose of the chemical, but also on the other important measurements for your pool. For example, adding Trichlor not only raises your Free Chlorine, it also increases your Cyanuric Acid, lowers your pH and increases your Salt. Adding Cal Hypo raises Free Chlorine, and also raises Calcium Hardness (CH) and Salt.

With the Effects Calculator you can measure the effects on pool chemistry of adding a given dose of:
• Bleach
• Trichlor
• Dichlor
• Cal-hypo
• Lithium Hypochlorite
• Chlorine gas
• Muriatic Acid
• Dry Acid
• Washing soda
• Soda Ash
• Borax
• Sodium Tetraborate Pentahydrate
• Boric Acid
• Caustic Acid (lye)
• Baking Soda
• Calcium Chloride
• Calcium Chloride dihydrate
• Stabilizer
• Liquid Stabilizer
• Salt

Recent changes:
Users with accounts can now log in from the app and use the pool data they have set up online.
Calculated volumes can be saved to an existing pool setup.
The app now shows which volume is being used for tests.