basic

Mole Fraction from Mass Composition Calculator

x_i = (m_i/M_i) / Σ(m_j/M_j) — mole fraction from mass.

Converts mass composition of a binary mixture into mole fractions from component masses and molar masses.

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

n_i = m_i / M_i; x_i = n_i / (n_1 + n_2)

In depth

Converts mass composition of a binary mixture into mole fractions from component masses and molar masses.