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Molarity, ppm & Mole Fraction Converter

Convert between M, ppm, and mole fraction for aqueous solutions.

Converts between molarity (M), parts per million (ppm by mass), and mole fraction for dilute aqueous solutions given solute molar mass.

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

Inputs

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

ppm = M × M_mol × 1000/ρ; x = M/(M + 1000ρ/M_solvent)

In depth

Converts between molarity (M), parts per million (ppm by mass), and mole fraction for dilute aqueous solutions given solute molar mass.