SMILES to Molecular Formula Converter

Paste a SMILES string to get the molecular formula and supporting PubChem metadata.

Quick answer: paste SMILES such as CCO or CC(=O)OC1=CC=CC=C1C(=O)O, then convert to formula.

Molecular formula output appears here.

About SMILES and Molecular Formula

SMILES describes molecular connectivity as a compact text string. A molecular formula summarizes the atom counts in the molecule, such as C9H8O4 for aspirin.

Use formula output for reports, exact mass checks, and composition calculations.
Use the molecular weight tool when you need g/mol from the formula.