Pool calculators that do the math for you
Chemical doses, equipment sizes and running costs for your pool in seconds. US or metric units, results update as you type, and every formula is explained.
Start here: Pool Volume CalculatorGallons or liters for any pool shape. Every other calculator uses this number.Find a calculator
Pool Equipment Sizing Calculators
Pool Water Chemistry Calculators
- Pool Chlorine CalculatorDose for liquid, cal-hypo, dichlor or trichlor.
- Pool Shock CalculatorShock dose from target FC or CYA-based SLAM level.
- Pool Salt CalculatorPounds or kg of salt and number of bags.
- Pool pH CalculatorAcid or soda ash to hit your target pH.
- Pool Alkalinity CalculatorBaking soda to raise TA, acid to lower it.
- Pool Stabilizer (CYA) CalculatorStabilizer to add, or water to drain to lower CYA.
- Pool Calcium Hardness CalculatorCalcium chloride to raise CH, or drain to lower it.
- Pool LSI Calculator (Saturation Index)Is your water corrosive, balanced or scaling?
- Pool Chemical Dosage CalculatorAny common product, any change, one dose.
Pool Heating Calculators
Pool Cost Calculators
Most-used calculators
Why use SmartPoolCalc
Exact doses, not rules of thumb
Every dose uses your pool volume and the strength printed on your product, not a generic "per 10,000 gallons" label.
Formulas you can check
Each page shows the formula, its source and a worked example with real numbers, so you can verify the result yourself.
Your units, your prices
Switch between US and metric units anywhere. Every price is a default from a public source that you can overwrite.
Shareable results
Copy a link to any result to send it to your pool professional or save it for next time. No sign-up, nothing stored on a server.