Pool Chemical Dosing Calculator
Calculate the amount of acid, chlorine, and baking soda needed to adjust pool pH, chlorine, and alkalinity levels.
Inputs
Results
Muriatic Acid
78 oz
≈ 20 sticks of butter
Calcium Hypochlorite
0.38 lbs
≈ 2 sticks of butter
How to Use This Calculator
- Enter your pool's water volume in gallons — use the Pool Volume Calculator if you don't know it.
- Input your current pH and target pH (ideal range is 7.2–7.6); the calculator will compute muriatic acid or soda ash needed.
- Enter current and target free chlorine levels in PPM (target 2–4 PPM) to calculate chlorine addition.
- Set current and target total alkalinity (ideal 80–120 PPM) to find the baking soda dose required.
- Review Acid Ounces, Chlorine Pounds, and Baking Soda Lbs outputs for each chemical to add.
- Add chemicals separately with the pump running and retest after 4–6 hours before adding the next chemical.
How the result changes with Current pH
| Current pH | Muriatic Acid | Calcium Hypochlorite |
|---|---|---|
| 6.3 | 0 oz | 0.38 lbs |
| 7.05 | 0 oz | 0.38 lbs |
| 7.95 | 107.2 oz | 0.38 lbs |
| 8.7 | 253.5 oz | 0.38 lbs |
What each input means
- Pool Volume
- Total pool water volume in gallons.
- Current pH
- Current pool water pH reading.
- Target pH
- Ideal pool pH (7.2-7.6 recommended).
- Current Chlorine
- Current free chlorine level.
- Target Chlorine
- Target free chlorine level (2-4 ppm recommended).
- Current Alkalinity
- Current total alkalinity reading.
- Target Alkalinity
- Target total alkalinity (80-120 ppm recommended).
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersPool Volume = 15000, Current pH = 7.8, Target pH = 7.4, Current Chlorine = 1 = 7 input(s) provided
- Calculate Muriatic AcidMuriatic Acid78 = 78
- Calculate Calcium HypochloriteCalcium Hypochlorite0.38 = 0.38
- Calculate Baking SodaBaking Soda9 = 9
- Calculate Estimated Chemical CostEstimated Chemical Cost22.22 = $22.22
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