Calculate Salinity from electrical conductivity and temperature of a solution:

Use the following calculator to calculate Salinity from electrical conductivity for any solution. The Salinity range for this calculator is from S = 2 to S = 42.

- Measure temperature of sample in Celsius degree (C)
- Measure the electrical conductivity (in uS/cm) of the same sample using conductivity meter at specified temperature in step 1.
- Enter temperature (C) and electrical conductivity (uS/cm) in the following calculator.
- Press recalculate button to calculate Salinity.

Salinity is an important unitless property of industrial and natural waters. It was originally conceived as a measure of the mass of dissolved salts in a given mass of solution.

The commonly used unit is Practical Salinity Unit (PSU), and another unit called PPT (part per thousands)

The most accurate method to measure salinity is by measuring electrical conductivity of a solution at specific temperature (t) and substitute values in the following equation:

Where

Values **a**_{0} to **a**_{5} and **b**_{0} to **b**_{5} all are constants

C (Kcl solution at t)(uS/cm) = -0.0267243 x (18)^{3} + 4.6636947 x (18)^{2} + 861.3027640 x (18) + 29,035.1640851

= 45893.8 uS/cm

This equation generated from 37 readings of the same solution at different temperatures from 0 to 37 C degree. See Figure A below