Molarity Calculator

The Molarity Calculator calculates the concentration of a solution. Simply enter any available value (mass + molecular weight + volume, or concentration + volume) to calculate molarity, mass concentration, and moles of solute. Units are automatically converted.

Mass

Amount of solute by mass. Leave blank if unknown.

Molecular Weight

Molar mass of the compound. Typical unit is g/mol (e.g., NaCl ≈ 58.44 g/mol).

Volume

Final solution volume. Needed to compute molarity (moles per liter).

Concentration

Known molarity (if any). If provided with volume, moles can be computed even without mass/MW.

Actions

Result

Molarity =

—

Mass Concentration =

—

Moles of solute =

—