Molarity Calculator
Calculate the molarity (molar concentration) of a solution from moles of solute and volume.
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Molarity
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Millimolar
Recent Calculations
What Is Molarity?
Molarity (M) is the number of moles of solute per liter of solution. It's the most common way to express solution concentration.
Formula
M = moles of solute / liters of solutionExample
0.5 moles of NaCl in 1 liter of water = 0.5 M NaCl solution.
Frequently Asked Questions
What's the difference between molarity and molality?
Molarity uses volume of solution. Molality uses mass of solvent. Molality doesn't change with temperature.
How do I prepare a specific molarity?
Calculate moles needed: moles = Molarity × Volume. Convert to grams using molar mass.