Calculate the molar mass of any chemical compound by entering its formula. Get instant element-by-element breakdown with total mass in g/mol.
Total Molar Mass
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Number of Elements
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Total Atoms
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Enter element symbols with proper capitalization (H, O, Ca, not h, o, ca). Use numbers as subscripts after elements (H2O, not H2o). For compounds with parentheses like Al2(SO4)3, include the parentheses and multiplier.
Yes! Enter hydrates using a dot notation like CuSO4·5H2O or CuSO4.5H2O. The calculator will include the water molecules in the total molar mass calculation.
The calculator uses IUPAC standard atomic weights rounded to 3-4 significant figures. These are the same values typically found in chemistry textbooks and reference materials.
Molar mass is essential for stoichiometry calculations, converting between grams and moles, determining empirical formulas, and calculating concentrations in solutions. It's a fundamental property for quantitative chemistry.
Yes, the calculator can parse nested parentheses and complex formulas like Ca(OH)2 or Al2(SO4)3. Just ensure proper syntax with matching parentheses and correct element capitalization.
Molecular weight and molar mass are numerically the same but have different units. Molecular weight is dimensionless (relative to carbon-12), while molar mass has units of g/mol and represents the mass of one mole of substance.
Results are accurate to the precision of the atomic weights used (typically 3-4 significant figures). For most chemistry coursework and laboratory calculations, this precision is more than adequate.