Molarity from Mass Calculator

Summary

Enter solute mass, molar mass, and solution volume to instantly calculate molarity in mol/L.

How it works

1. Enter the solute mass in grams.
2. Enter the molar mass of the solute in g/mol.
3. Enter the solution volume and select the unit (L or mL).
4. The tool divides mass by molar mass to get moles, then divides by volume in liters to get molarity.
5. Results display molarity (mol/L), total moles, and the formula used.

Use cases

• Prepare a standard solution of known concentration in a chemistry lab.
• Verify solution molarity when dissolving a weighed amount of reagent.
• Convert grams of a compound to molar concentration for biological assays.
• Check stock solution concentration before diluting for cell culture experiments.
• Calculate the molarity of a buffer solution prepared from a measured mass of solute.
• Teach or verify molarity concepts in academic courses.

Frequently Asked Questions