Science & Environment
Swimming Pool Langelier Saturation Index Calculator
Calculate the Langelier Saturation Index (LSI) for swimming pool water balance.
Your inputs
Change any value to update the result instantly.
Langelier Saturation Index
0.1
Temperature factor
0.7
Calcium hardness factor
1.998
Water balance status
0.1 Balanced
Formula and working
LSI = pH + TF + CF + AF − 12.1 (simplified)
- 1
Collect the inputs
pH = 7.5; Water temperature = 26 °C; Calcium hardness = 250 mg/L; Total alkalinity = 100 mg/L
- 2
Apply the formula
LSI = pH + TF + CF + AF − 12.1 (simplified)
- 3
Result
Langelier Saturation Index = 0.1
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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