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Science Calculators

Mass Percent Concentration Calculator

Verified formula Updated Jun 2026 Private — runs on your device

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Verified formula Private

Mass percent

10.00%

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Mass Percent Concentration Calculator

The Mass Percent Concentration Calculator works out your mass percent in an instant. Enter mass of solute and mass of solution and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the mass of solute.
  2. Enter the mass of solution.
  3. Read off your mass percent — the calculator updates automatically, with no button to press.

Formula

The Mass Percent Concentration Calculator uses the formula:

Mass percent = Mass of solute ÷ Mass of solution × 100

Worked example

For example, with mass of solute of 10 g and mass of solution of 100 g, the mass percent is 10.00%.

Inputs used
Mass of solute 10 g
Mass of solution 100 g
Results
Mass percent 10.00%

Results are estimates for educational use, not professional advice.

Frequently asked questions

Divide the solute mass by the total solution mass and multiply by 100. 10 g of salt in 100 g of solution is 10% by mass.

Yes. The solution mass includes both the dissolved solute and the solvent it is dissolved in.

They measure the same idea at different scales. Mass percent multiplies by 100; ppm multiplies by a million for tiny concentrations.

It is common for solutions, alloys and food labels, wherever the proportion by weight matters.

Enter the mass of solute. Enter the mass of solution. Read off your mass percent — the calculator updates automatically, with no button to press.

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