Pool Water Calculator

Pool Water Calculator provides everything you need to quickly balance and maintain your pool or hot tub. Built for both beginners and experts alike, Pool Water Calculator provides treatment directions and dosage information for a wide variety of pool chemicals and water quality parameters for nearly all pool types and spas.

Visualize your water quality history through an assortment of beautiful and reactive graphs, enabling you to follow your progress or identify potential problems. Track your chemical additions and maintenance events, or update previous datapoints as needed to fine-tune your records.

Manage up to five different pools or spa profiles, with each profile maintaining a unique water chemistry and treatment history, individual chemical targets, custom notes, and maintenance records.

Quickly find the optimal chemical targets and ranges based on your pool type and current water chemistry. Customized water quality graphs illustrate your pool's chemistry in relation to the ideal targets or applicable water chemistry curves, while guidance items will advise you if you're in range or need to take action before problems occur.

Customize chemical strengths (1 to 100%) to find precise dosing information for nearly any standard pool chemical.

The Dosing Guide explains each water quality parameter and its role in balancing your pool, the treatment chemicals available for adjusting each of these parameters, and instructions on how to add them to your pool or spa.

Pool Water Calculator currently supports dosing calculations for:
- Calculating pool volume
- Raising/lowering pH
- Raising/lowering Free Chlorine (including targets for regular maintenance, SLAM, and mustard algae)
- Raising bromine
- Raising/lowering total alkalinity
- Calcium hardness
- Decreasing phosphate
- Cyanuric acid (chlorine stabilizer)
- Borates
- Salt Water
- Calcium Saturation Index
- Langelier Saturation Index

Pool Water Calculator provides dosing information for the following treatment chemicals:
- Borax Tetrahydrate
- Borax Pentahydrate
- Boric Acid
- Boron Sodium Oxide Tetrahydrate
- Bromine granules
- Calcium Chloride (1 to 100%)
- Calcium Chloride Dihydrate (1 to 100%)
- Calcium Hypochlorite (1 to 100%)
- Cyanuric Acid / Stabilizer
- Dichlor
- Hydrochloric / Muriatic Acid (1 to 100%)
- Lithium Hypochlorite
- Pool Salt
- Sodium Bicarbonate / Baking Soda
- Sodium Bisulfate / Dry Acid (1 to 100%)
- Sodium Carbonate / Washing Soda
- Sodium Hydroxide (1 to 100%)
- Sodium Hypochlorite / Bleach (1 to 100%)
- Sodium Thiosulfate
- Sulfuric Acid (1 to 100%)
- Trichlor
- PR-10000

Pool Water Calculator also enables you to track and graph historical data for the following water quality parameters:
- pH
- Free Chlorine
- Combined Chlorine
- Bromine
- Total Chlorine
- Total Alkalinity
- Calcium Hardness
- Cyanuric Acid
- Borate
- ORP
- Copper (for ionized pools)
- Salt
- Total Dissolved Solids
- Nitrate
- Phosphate
- Water Temperature
- Calcium Saturation Index
- Langelier Saturation Index
- Turbidity

App supports both Metric and U.S units and date formats, as well as language support for English, Spanish, and French.

Recent changes:
We added the ability to track chemical additions by count, and improved app performance for newer devices.