Molar mass calculator and moles to grams converter
Calculate molar mass from a chemical formula, then convert mass to moles or moles to mass.
Enter a chemical formula. You may then provide either a mass or an amount of substance to convert automatically in the other direction.
Examples: H2O, NaCl, Ca(OH)2, Al2(SO4)3, CuSO4·5H2O. Unicode subscripts such as H₂O are accepted.
Atomic weights use the CIAAW 2024 abridged standard values for normal materials. Samples with unusual isotopic composition can have a different molar mass.
Results
Formula breakdown
| Element | Atom count | Abridged atomic weight | Contribution to M (g/mol) |
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