Calculate molarity, mass, molecular weight, or volume of a chemical solution
Molarity (M) is a measure of concentration defined as the number of moles of solute per liter of solution. This calculator uses the fundamental formula M = mass / (molecular weight × volume) and can compute any missing value when three of four variables are provided.
Molarity is the most common unit of concentration in chemistry. It is used in stoichiometry, preparing solutions, titrations, and reaction rate calculations. A 1 M solution contains one mole of solute per liter of solution.
Molarity is expressed in moles per liter (mol/L). To convert from mass, divide by the molecular weight to get moles, then divide by volume in liters. The calculator supports grams, milligrams, kilograms, liters, and milliliters with automatic conversion.