Conductivity Of Solution Calculator

Work out conductivity of solution instantly with clear inputs, formula shown and shareable results.

About Conductivity Of Solution Calculator

A conductivity meter measures conductance, which depends on the geometry of the probe. Multiplying by the cell constant removes the geometry and gives conductivity. Dividing conductivity by concentration gives molar conductivity, the per-mole ion mobility that lets different electrolytes be compared. 1.5 mS with a unit cell constant at 0.01 M gives 150 S cm2/mol.

Formulas

Conductivity

kappa = conductance x cell constant

Molar conductivity

lambda = 1000 x kappa (S/cm) / concentration (mol/L)

Worked example

With the default values below, Conductivity Of Solution Calculator returns Molar Conductivity of 150.000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Measured conductanceminimum 0 mS: 1.5 mS
Cell constantminimum 0 1/cm: 1 1/cm
Electrolyte concentrationminimum 0 mol/L: 0.01 mol/L

Results

Molar Conductivity: 150.000 S cm2/mol
Conductivity: 1.5000 mS/cm
Resistivity: 666.67 ohm cm
Approximate Total Dissolved Solids: 960.0 mg/L

Step by step

1Values used
2Conductivity
3Molar conductivity
4Molar Conductivity= 150.000 S cm2/mol
5Conductivity= 1.5000 mS/cm
6Resistivity= 666.67 ohm cm
7Approximate Total Dissolved Solids= 960.0 mg/L

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why does molar conductivity change with dilution?

Ions interfere with each other at high concentration. As the solution is diluted the value rises towards a limiting value at infinite dilution.

Is the dissolved solids figure reliable?

It is an approximation using a 640 conversion factor typical of mixed salts. Meters let you pick 500-700 depending on the water.