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Total Dissolved Solids Estimate — result sheet
Estimate total dissolved solids from specific conductance with an entered conversion factor and optional local intercept.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Estimated TDS = specific conductance × conversion factor + local calibration intercept.
The factor and intercept stay editable because conductivity-to-TDS relationships depend on water chemistry and calibration population.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Specific conductance — µS/cm at 25 °C; minimum 0; maximum 1000000
- Conductivity factor — mg/L per µS/cm; minimum 1.0E-6; maximum 10
- Local calibration intercept — mg/L; minimum -1000000; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Specific conductance | 500 |
| Conductivity factor | 0.65 |
| Local calibration intercept | 0 |
Estimated TDS = 325 mg/L.
Assumptions and limits
- Conductivity is corrected to the stated 25 °C reference and the factor matches the water type or local calibration.
- The result is an estimate in mg/L, not a gravimetric measurement of all dissolved material.
- Temperature correction, ionic composition, salinity, health limits, treatment decisions, and regulatory compliance are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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