Molarity Calculator — SharpCalcs

Calculate molarity, mass, volume, or moles — leave one field blank to solve for it.

M = mass / ( MW × V ) → M = n / V

Solve for

Molarity mol/L

Volume L

Mass g

Molecular Weight g/mol

Moles mol

Result

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How to use this calculator

Select what you want to solve for, fill in the known values, and the result updates instantly. Molarity (M) is defined as moles of solute per liter of solution.

When solving for molarity or mass, you need to provide the molecular weight (MW) of your compound. When solving for moles, MW is not required.

Common molecular weights (click to autofill)

Compound	Formula	MW (g/mol)