Molarity Calculator

Calculate molarity (concentration) of a solution using mass, volume, and molar mass inputs.

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About This Tool

This molarity calculator helps you determine the concentration of a solution in moles per liter (mol/L). Simply enter the mass of the solute (in grams), the volume of the solution (in liters), and the molar mass of the solute (in g/mol). The calculator will instantly compute the molarity using the formula M = (mass / molar mass) / volume. This tool is essential for chemistry students, researchers, and professionals working with chemical solutions.

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How to Use

Enter the mass of the solute in grams
Enter the volume of the solution in liters
Enter the molar mass of the solute in g/mol
Click 'Calculate Molarity' to see the result
View the detailed calculation breakdown in the results section

Frequently Asked Questions

Find Quick Answers

What is molarity?

Molarity (M) is a measure of concentration expressed as moles of solute per liter of solution (mol/L). It's one of the most common ways to express concentration in chemistry.

What units should I use?

Mass should be in grams (g), volume in liters (L), and molar mass in grams per mole (g/mol). The calculator will output molarity in moles per liter (mol/L).

Can I calculate with different volume units?

The calculator requires volume in liters. If you have volume in milliliters (mL), divide by 1000 to convert to liters before entering.

What if I don't know the molar mass?

You need the molar mass to calculate molarity. You can find molar mass by summing the atomic masses of all atoms in the chemical formula of your solute.

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