Free · Chemistry lab

Molecular Formula Finder

Draw a molecule from SMILES and find its molecular formula in one clear step.

Clear, kid-friendly steps
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Chemistry drawing lab

Turn code into a picture

SMILES is a short code scientists use to describe how atoms connect.

Common moleculeFound in coffee, tea, and cocoaSMILES codeTry a preset first. Chemistry codes use exact letters and symbols.

Ready to draw

Caffeine

Formula—

Three simple steps

How to use it

Pick a familiar molecule or type a SMILES code.
Draw it to see how its atoms and bonds connect.
Save the picture or try another molecule.

Private by default

Your words and choices stay in this browser tab. There are no accounts, uploads, ads, or trackers inside the tool. Close the tab and the working data is gone.