Mass Fraction Calculator
Calculate mass fraction (w) of components in a mixture. Mass fraction = mass of component / total mass
Mass Fraction: w = mass / total mass
Total Mass
100.0000 g
Mass Fraction A (wA)
0.250000
Mass %
25.00%
Mass Fraction B (wB)
0.750000
Mass %
75.00%
Verification:
wA + wB = 1.000000
Sum of all mass fractions should equal 1
What is Mass Fraction?
Mass fraction (w) is a dimensionless quantity expressing the ratio of the mass of a component to the total mass of the mixture. Unlike mass percent, mass fraction is expressed as a decimal between 0 and 1. The sum of all mass fractions in a mixture equals 1. Mass fractions are commonly used in chemical engineering, metallurgy, and materials science for describing alloy and mixture compositions.