Water balance
See what to adjust, and what to leave alone.
Pool volume
Get the gallons behind every good decision.
Salt
Find your top-up in pounds and bags.
Chlorine
Match your chlorine to your stabilizer.
Shock
Plan a treatment around your CYA reading.
Alkalinity
Make a measured adjustment to your TA.
Stabilizer
Calculate CYA additions or dilution.
Start with volume and reliable readings
For any dose, confirm the gallons of water actually in the pool. Measure water depth rather than wall height. Then use fresh readings from a method suited to the parameter and range you need. The test kit comparison explains which inputs three specific kits can supply.
Match the product to the calculation
Concentration, active ingredient and units all matter. Dry ounces and fluid ounces are different measurements. Our pool chemical buying guide connects product types to these tools without assuming that every reading calls for an addition.
Calculations run in your browser, without an account or calculation API. Results are estimates, not swimming clearance. Your product label and equipment manual take priority. Read each tool’s assumptions and our calculation method.