Molarity Calculator

Calculate molar concentration (M = mol/L), required mass of solute in grams, or volume of solution for chemistry laboratory preparations.

How to use this calculator

1. Select solve for.
2. Enter mass, volume, and molar mass.
3. Read molarity or mass needed.

Formula & method

Molar Concentration

M = (Mass / Molar Mass) / Volume

Solution chemistry formula.

Example

58.44g NaCl in 1.0 L = 1.0 M.

Key insights

• NaCl molar mass is 58.44 g/mol.

How to interpret your result

Molarity (M)

Moles per liter (mol/L).

Frequently asked questions

Molarity vs Molality?

Molarity is per L solution; molality is per kg solvent.

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