basic

Mole Fraction to Mass Percent (Binary Mixture) Calculator

mass% A = (x_A · M_A) / (x_A · M_A + x_B · M_B) × 100.

Convert the mole fraction of component A in a binary mixture to mass-percent (and vice-versa for component B), given the molar masses of both species: mass% A = (x_A · M_A) / (x_A · M_A + (1 − x_A) · M_B) · 100. Useful for polymer blends, alloys, and aqueous solutions of two solutes.

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

Inputs

g/mol
g/mol

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

mass% A = (x_A · M_A) / (x_A · M_A + x_B · M_B) · 100, x_B = 1 − x_A.

In depth

Convert the mole fraction of component A in a binary mixture to mass-percent (and vice-versa for component B), given the molar masses of both species: mass% A = (x_A · M_A) / (x_A · M_A + (1 − x_A) · M_B) · 100. Useful for polymer blends, alloys, and aqueous solutions of two solutes.