When to use this calculator
Find the grams-per-100-millilitres concentration of a solution. This convention is grams of solute per 100 mL of final solution, not a dimensionless mass fraction.
Explore the concentration & mixtures calculators for other questions in this topic. For a related calculation, use the Molality Calculator: Calculate molality using solute amount and solvent mass.
PUTTING IT INTO PRACTICE
Mass Volume Percent: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Solute mass (g) | 5 |
| Final solution volume (mL) | 100 |
| Result | 5 % m/v |
- Check the input labels and enter the example values above.
- Apply the relationship: Mass/volume percentage = grams per 100 mL.
- The result is 5 % m/v, rounded for display.
How to interpret your result
This convention is grams of solute per 100 mL of final solution, not a dimensionless mass fraction.
Keep mass, amount and volume definitions separate. Molarity uses final solution volume; molality uses solvent mass. A dilution cannot increase concentration without some process beyond adding solvent.
Frequently asked questions
Are molarity and molality interchangeable?
No. Molarity is amount per solution volume, while molality is amount per solvent mass.
When is the mass volume percent calculator useful?
Find the grams-per-100-millilitres concentration of a solution. This convention is grams of solute per 100 mL of final solution, not a dimensionless mass fraction.
How do I use the mass volume percent calculator?
Enter solute mass (g), final solution volume (ml). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Mass/volume percentage = grams per 100 mL.
What should I check before using the result?
This convention is grams of solute per 100 mL of final solution, not a dimensionless mass fraction.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
Further reading
For background on this topic, see OpenStax: molarity and dilution ↗. This is a topic reference, not an external review or endorsement of this tool.
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