TDS Calculator
Estimate Total Dissolved Solids (TDS) in water based on electrical conductivity.
Calculation Parameters
Adjust the values below.
Calculated Result
Expert Tip
Ensure units are correctly formatted (e.g. Kelvin for gas temperatures and liters for volumes) to get chemically accurate outputs.
How this Calculator Works
This calculator allows you to solve TDS problems dynamically. Adjust the input parameters using the sliders or selection menu below:
- Electrical Conductivity (µS/cm) (Range: 1 to 8000, Default: 500)
- Conversion Factor (k) (Range: 0.40 to 1.00, Default: 0.64)
The results are computed instantly and updated in the results panel on the right.
Formula & Methodology
Where:
- Electrical Conductivity: Parameter value.
- Conversion Factor: Parameter value.
Step-by-Step Calculation Example
To calculate TDS manually, follow these steps:
- Identify the input parameters. For example:
- Electrical Conductivity (µS/cm) = 500
- Conversion Factor (k) = 0.64
- Apply the formula:
TDS (ppm or mg/L) = EC (µS/cm) * k (conversion factor)
- Verify the calculated value which is updated instantly in the results panel on the right.
Frequently Asked Questions
What is TDS (Total Dissolved Solids)? ▼
TDS measures the combined total of inorganic salts and organic matter dissolved in water, expressed in mg/L or ppm.
How is TDS calculated from Electrical Conductivity (EC)? ▼
TDS (ppm) = Electrical Conductivity (μS/cm) × Conversion Factor (typically 0.5 to 0.7).
What is acceptable drinking water TDS? ▼
According to EPA and WHO secondary standards, drinking water TDS should generally be below 500 ppm.