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Molar Conductivity from Specific Conductivity Calculator

Λ_m = (κ · 1000) / c — κ in S/cm, c in mol/L, Λ_m in S·cm²/mol.

Compute the molar conductivity Λ_m of an electrolyte solution from its measured specific conductivity κ (S·cm⁻¹) and molar concentration c (mol/L): Λ_m = (κ · 1000) / c. Reports Λ_m in S·cm²·mol⁻¹ and the equivalent S·m²·mol⁻¹. As c → 0, Λ_m → Λ°_m (Kohlrausch's limiting law).

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

S/cm
mol/L

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Λ_m = κ · 1000 / c.

In depth

Compute the molar conductivity Λ_m of an electrolyte solution from its measured specific conductivity κ (S·cm⁻¹) and molar concentration c (mol/L): Λ_m = (κ · 1000) / c. Reports Λ_m in S·cm²·mol⁻¹ and the equivalent S·m²·mol⁻¹. As c → 0, Λ_m → Λ°_m (Kohlrausch's limiting law).