Mass Percent & ppm of a Solution

Calculate mass percent, ppm, mass fraction and molality of a solution from solute and solvent masses, free online.

Mass of solute (g)

Mass of solvent (g)

Solute molar mass (g/mol) — optional (optional)

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Mass percent = solute ÷ (solute + solvent) × 100; ppm = mass fraction × 10⁶. With the solute's molar mass you also get molality (mol solute per kg solvent).