⚗️ Molar Mass Calculator
Look up the molar mass of common chemical compounds. Select a formula to find its molecular weight in g/mol.
What is Molar Mass?
Molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in the molecular formula. For example, water (H₂O) has a molar mass of 2(1.008) + 15.999 = 18.015 g/mol.
How to Use This Calculator
Select a common chemical compound from the dropdown to instantly see its molar mass. The molar mass is essential for converting between grams and moles in stoichiometry, preparing solutions of known concentration, and many other chemistry calculations.
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