Calculate the molar mass of any chemical compound from its formula. See element-by-element breakdown with atom counts, atomic masses, mass contributions, and percent composition.
Last updated: March 2, 2026
Calculate the molar mass of any chemical compound from its formula. See element-by-element breakdown with atom counts, atomic masses, mass contributions, and percent composition. This tool runs in-browser for fast resul…
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It supports standard chemical formulas with parentheses (e.g. Ca(OH)2), subscript numbers, and hydrates (e.g. CuSO4·5H2O). All 118 elements are included.
The atomic masses are standard atomic weights from IUPAC, suitable for general chemistry calculations.
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Supports parentheses, subscript numbers, and hydrates (e.g. CuSO4·5H2O).