⚗️Molar Mass Calculator
Type any chemical formula and instantly get the molar mass in g/mol, a per-element breakdown, percent composition, and mass-to-moles conversion. Handles parentheses, nested groups, and hydrate notation like CuSO₄·5H₂O.
Per-element Breakdown
| Element | Symbol | Count | At. Weight (g/mol) | Contribution (g/mol) | % Composition |
|---|
Mass ↔ Moles Conversion
Enter a mass (g) to get moles, or enter moles to get mass — auto-updated when the formula changes.
Free Molar Mass Calculator Online
Need the molar mass of a compound fast? Our free Molar Mass Calculator computes it the moment you type a chemical formula. As a fast and reliable molar mass calculator, it parses any formula—from simple ones like H₂O to complex compounds with parentheses and hydrates like Ca(OH)₂ or CuSO₄·5H₂O—and returns the molar mass in g/mol instantly.
But it does more than one number. Get a per-element breakdown showing how each element contributes, see the percent composition by mass, and convert between grams and moles in a click—perfect for stoichiometry and lab prep. Whether you're a student tackling chemistry homework, a teacher building worksheets, or working in the lab, the full picture is one formula away.
Simply type your chemical formula and see the results instantly. No sign-up, no downloads, no limits—just accurate chemistry whenever you need it.