Molar Mass Calculator
Calculate molar mass from a chemical formula.
Calculations run in this browser. Values are not submitted to the server.
Result
Formula and assumptions
Sums standard atomic weights for supported elements and parentheses. Unsupported symbols are rejected; result is in g/mol.
Example values are shown in the input placeholders. Results use browser number precision unless the tool uses exact integer arithmetic. Check units and assumptions before using a result.