Molarity Calculator
Calculate solution concentration (moles per liter)
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Molarity Result
About This Calculator
The Molarity Calculator helps you calculate the molarity (concentration) of a solution. Molarity is defined as the number of moles of solute per liter of solution, and is one of the most common ways to express solution concentration in chemistry.
This tool is essential for chemistry students, researchers, and professionals who need to prepare solutions of specific concentrations or calculate the molarity of existing solutions. The calculator supports different volume units (liters, milliliters, microliters).
Formula & Calculation Method
Molarity is calculated using the formula:
M = n / V
Where:
- M = Molarity (moles per liter, M)
- n = Number of moles of solute
- V = Volume of solution in liters (L)
Note: If volume is given in milliliters (mL) or microliters (μL), it must be converted to liters before calculation (1 L = 1000 mL = 1,000,000 μL).
How to Use This Calculator
Frequently Asked Questions
What is molarity?
Molarity (M) is a measure of solution concentration defined as the number of moles of solute per liter of solution. It is one of the most common units for expressing concentration in chemistry.
How is molarity different from molality?
Molarity (M) is moles per liter of solution, while molality (m) is moles per kilogram of solvent. Molarity depends on temperature (volume changes), while molality does not.
What units are used for molarity?
Molarity is expressed in moles per liter (M or mol/L). Common concentrations range from millimolar (mM, 10⁻³ M) to molar (M, 1 mol/L) solutions.
How do I prepare a solution of specific molarity?
To prepare a solution of specific molarity, calculate the mass of solute needed using: mass = molarity × volume × molecular weight. Dissolve the solute in less than the final volume, then add solvent to reach the desired volume.
Calculator by
NumCalculators Editorial Team
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