Molarity Calculator
Calculate molarity, moles, or mass for chemical solutions.
Results
Molarity (mol/L)
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Moles of Solute
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Required Mass for Target
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What is Molarity?
Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution. It is one of the most common units used in chemistry to express solution concentration.
How to Use This Calculator
- Enter the mass of solute, molecular weight, and solution volume to calculate molarity and moles.
- Optionally enter a target molarity to find the required mass of solute.
- Click "Calculate" to see the results.
Frequently Asked Questions
What is the formula for molarity?
Molarity (M) = Moles of Solute / Liters of Solution. Moles = Mass (g) / Molecular Weight (g/mol).
How do I convert mL to L?
Divide milliliters by 1,000 to get liters. This calculator handles the conversion automatically.
What is molecular weight?
Molecular weight is the mass of one mole of a substance, expressed in grams per mole (g/mol). You can find it on the periodic table for elements or calculate it for compounds.
Can I calculate required mass for a desired concentration?
Yes, enter your target molarity along with molecular weight and volume to see how much solute you need.