Molarity Calculator
Calculate molarity (molar concentration) using c = m / (M × V). Convert between mass, molar mass, volume, and concentration.
Formula
c = m / (M × V)
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The molarity calculator computes the molar concentration of a solution using the formula c = m / (M × V). Molarity indicates how many moles of a solute are present per liter of solution and is expressed in mol/L (or M).
The four variables are: c (concentration in mol/L), m (mass of solute in grams), M (molar mass in g/mol), and V (volume of solution in liters). When three of these values are known, the fourth can be calculated.
Molarity is one of the most commonly used concentration expressions in chemistry. It is used to describe reaction solutions, buffers, standard solutions, and in stoichiometric calculations.