Molar Mass Calculator

Find the molar mass of a chemical formula.

Molar mass (g/mol) 18.015

Formula: sum of (atomic mass × count) for every element

Step-by-step with your numbers:

1. Values used:

3. Molar mass = 18.015g/mol

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Compute the molar mass of any formula, including parentheses like Ca(OH)₂.

The math behind it

Add up each element's atomic mass times how many times it appears (multiplying out parentheses).

H2O → 18.015 g/mol; Ca(OH)2 → 74.09 g/mol.

Format?

Use standard symbols and counts: NaCl, H2SO4, Ca(OH)2. Hydrates (·) aren't parsed.