What is mass percent?

Mass percent (w/w%) is the ratio of solute mass to total solution mass, multiplied by 100.

How is it different from volume percent?

Mass percent uses masses; volume percent uses volumes. Mass percent is temperature-independent.

Is mass percent the same as purity?

Often yes. Purity of a substance is commonly expressed as mass percent of the desired component.

Free Mass Percent Calculator

Calculate the mass percent of a solute in a solution given the mass of solute and total solution mass.

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Mass of Solute

Mass of Solution

Mass Percent

10.00%

Mass of Solvent90.00 g

Mass Percent vs Mass of Solute

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How to Calculate Mass Percent

Formula

Mass % = (mass of solute / mass of solution) × 100

Mass percent tells you the grams of solute per 100 grams of solution.

Example Calculation

10 g of salt dissolved in 90 g of water (100 g solution).

01Mass % = (10 / 100) × 100
02Mass % = 10%

Frequently Asked Questions

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