Molar Mass Calculator
Calculate the molar mass (molecular weight) of any chemical formula — with element-by-element composition breakdown
Chemical Formula
Quick examples:
Molar Mass
180.156g/mol
Composition
Element-by-element mass breakdown
| Element | Atoms | Atomic mass | Subtotal | % |
|---|---|---|---|---|
OOxygen | 6 | 15.999 | 95.994 | 53.28% |
CCarbon | 6 | 12.011 | 72.066 | 40.00% |
HHydrogen | 12 | 1.008 | 12.096 | 6.71% |
Supported syntax
- Element symbols:
H, He, Fe, ...(case sensitive) - Subscripts:
H2O,C6H12O6 - Parentheses & brackets:
Ca(OH)2,[Cu(NH3)4]SO4 - Hydrates (use
·or.):CuSO4·5H2O - Coefficients:
2H2O
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