Swimming Pool Calculators
Pool Alkalinity Adjustment Calculator
Calculate the baking soda dosage needed to raise your pool's total alkalinity to a target level based on pool volume.
Pool Bather Load Calculator
Calculate the maximum recommended number of bathers for a pool based on its surface area using the standard 27 square feet per person guideline.
Pool Breakpoint Chlorination Calculator
Calculate the free chlorine boost needed to reach breakpoint chlorination and eliminate combined chlorine (chloramines) from your pool.
Pool Calcium Hardness Calculator
Calculate the calcium chloride dosage needed to raise your pool's calcium hardness to a target level based on pool volume.
Pool Chemical Dosage Calculator
Use our free online pool chemical dosage calculator to get fast, accurate results in seconds. No sign-up required.
Pool Chlorine Calculator
Use our free online pool chlorine calculator to get fast, accurate results in seconds. No sign-up required.
Pool Cyanuric Acid Calculator
Calculate the cyanuric acid (stabilizer) dosage needed to protect chlorine from UV breakdown based on pool volume.
Pool Fill Time Calculator
Use our free online pool fill time calculator to get fast, accurate results in seconds. No sign-up required.
Pool Filter Sizing Calculator
Use our free online pool filter sizing calculator to get fast, accurate results in seconds. No sign-up required.
Pool Heater Size Calculator
Use our free online pool heater size calculator to get fast, accurate results in seconds. No sign-up required.
Pool Heating Cost Calculator
Use our free online pool heating cost calculator to get fast, accurate results in seconds. No sign-up required.
Pool pH Adjustment Calculator
Calculate the soda ash dosage needed to raise your pool's pH to a target level based on pool volume.
Pool Pump Size Calculator
Use our free online pool pump size calculator to get fast, accurate results in seconds. No sign-up required.
Pool Salt Dosage Calculator
Calculate the pounds of salt needed to raise your saltwater pool to its target salt level for proper chlorinator operation.
Pool Shock Dosage Calculator
Calculate the pounds of calcium hypochlorite shock needed to raise free chlorine by a target amount based on pool volume.
Pool Surface Area Calculator
Use our free online pool surface area calculator to get fast, accurate results in seconds. No sign-up required.
Pool Turnover Rate Calculator
Calculate how long it takes your pool's pump and filter system to circulate the entire pool volume once.
Pool Volume Calculator
Use our free online pool volume calculator to get fast, accurate results in seconds. No sign-up required.
Pool Water Dilution Calculator
Calculate what percentage of pool water needs to be replaced to lower cyanuric acid to a target level, since CYA cannot be removed chemically.
Pool Water Evaporation Calculator
Use our free online pool water evaporation calculator to get fast, accurate results in seconds. No sign-up required.
Balancing Water Chemistry, Not Guessing at It
Pool water chemistry is unforgiving — too little chlorine and algae takes hold, too much and swimmers' eyes and skin pay for it. These ten calculators cover pool volume, chemical dosage, and equipment sizing math.
Chlorine Dosage Scales With Volume, Not Guesswork
| Pool Volume | Approximate Chlorine Needed (to raise 1 ppm) |
|---|---|
| 10,000 gallons | ~2 oz liquid chlorine (12.5%) |
| 20,000 gallons | ~4 oz liquid chlorine (12.5%) |
| 30,000 gallons | ~6 oz liquid chlorine (12.5%) |
This scales linearly with volume, which is exactly why an accurate pool volume figure from the Pool Volume Calculator matters before dosing — guessing at volume means guessing at every chemical dose that follows. Calculate exact dosage with the Pool Chemical Dosage Calculator.
Popular Swimming Pool Calculators
- Pool Heater Size Calculator — sizes a heater to reach a target temperature within a desired time frame.
- Pool Pump Size Calculator — sizes a pump to turn over the full pool volume within a recommended cycle time.
- Pool Water Evaporation Calculator — estimates water loss from evaporation based on surface area and conditions.
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