Molarity Calculator

Calculate molarity, mass, volume, or molecular weight using the molarity equation.
M = mass / (MW x V)

Mass:

Molecular Weight:

Volume:

Concentration (Molarity):

Common Molecular Weights

NaCl (Salt)

58.44 g/mol

HCl

36.46 g/mol

H2SO4

98.08 g/mol

NaOH

40.00 g/mol

Glucose

180.16 g/mol

CaCl2

110.98 g/mol

About Molarity

Molarity (M) is a measure of the concentration of a solute in a solution. It is defined as the number of moles of solute dissolved per liter of solution.

The Formula:

M = n / V

M = mass / (MW x V)

M = Molarity (mol/L)
n = Moles of solute
MW = Molecular weight (g/mol)
V = Volume (L)

Applications:

- Laboratory solution preparation
- Chemical reaction calculations
- Pharmaceutical dosing
- Buffer preparation in biology
- Industrial quality control

Tip: Provide any 3 values to calculate the 4th. Remember that molarity is based on total solution volume, not solvent volume alone.