Loading Chemistry Engine...

Publication Grade Tools

SMILES to Structure Converter

Convert chemical identifiers into high-resolution 2D images and interactive 3D models. Analyze properties and export for research.

How to Convert SMILES to Structure

1

Enter Your Input

Paste a SMILES string, InChI identifier, or type a chemical name. The format is auto-detected.

2

Click Convert

Our RDKit-powered engine generates accurate 2D structures with publication-quality rendering.

3

Export & Analyze

Download SVG/PNG images, view 3D models, and get Lipinski drug-likeness analysis instantly.

0
|
Structure Preview

Common SMILES Examples

Use these common molecules to test SMILES to structure conversion, SMILES to PNG export, SMILES to SVG export, InChI generation, Molfile output, and Lipinski analysis.

Supported Chemical Structure Conversions

SMILES to Structure

Paste canonical or isomeric SMILES and generate a clean 2D molecular structure with copyable SMILES, InChI, InChIKey, and Molfile output.

SMILES to PNG or SVG

Download publication-ready molecule images as PNG or scalable SVG for notes, worksheets, reports, presentations, and research documentation.

Name or InChI to Structure

Resolve common chemical names, IUPAC names, InChI strings, and Molfile blocks into structures, then continue into retrosynthesis or safety checks.

Related tools: Retrosynthesis Planner | ChemSafe AI | Molar Mass Calculator

Frequently Asked Questions

What is a SMILES string in chemistry?
SMILES (Simplified Molecular-Input Line-Entry System) is a line notation for describing the structure of chemical species using short ASCII strings. Our tool translates these codes into standard 2D and 3D molecular drawings.
How do I convert a chemical name to a SMILES string?
Select "Name" from the format dropdown and type any common or IUPAC chemical name (e.g., "Aspirin" or "Caffeine"). Our converter uses the PubChem database to accurately resolve the name into its canonical SMILES string and molecular structure.
Can I convert InChI to SMILES or a Molfile?
Yes! The ChemAI converter automatically detects standard InChI strings. Once pasted, it immediately generates the corresponding SMILES string, InChI Key, and an exportable V2000 Molfile (SDF format).
How can I calculate Lipinski's Rule of Five online?
Simply input your molecule's structure. Our built-in Lipinski calculator instantly evaluates Molecular Weight (≤ 500), calculated LogP (≤ 5), Hydrogen Bond Donors (≤ 5), and Hydrogen Bond Acceptors (≤ 10) to determine drug-likeness.
Are the generated 2D/3D chemical structures free for publication?
Absolutely. You can download high-resolution SVG or PNG images of the 2D structures, as well as 3D snapshots. SVGs are vector-based and scale perfectly to any journal's resolution requirements without losing quality.
How do I convert multiple SMILES strings to 2D structures at once?
Use our "Batch (CSV)" mode. Upload a CSV file containing SMILES strings in the first column. The tool will process up to 50 molecules locally in your browser and return a downloadable CSV with calculated properties like LogP and Molecular Weight.
Can I convert SMILES to PNG or SVG?
Yes. After converting a SMILES string, ChemAI can export the generated 2D molecular structure as a PNG image or scalable SVG file for reports, worksheets, presentations, and research documentation.
What happens if PubChem details are not found?
The converter still shows local RDKit-derived structure data and molecular properties. PubChem details are added when a matching compound record is available.

SMILES to Structure Conversion in Your Browser

The ChemAI SMILES to Structure Converter is a free online tool for students, teachers, researchers, and professionals who need fast chemical structure generation. Paste a SMILES string to create a 2D molecule diagram, convert SMILES to PNG, export SMILES to SVG, generate InChI and InChIKey identifiers, or download a Molfile for use in other chemistry software.

Molecule Visualization, Export, and Analysis

Whether you need to convert a common chemical name, a standard InChI string, a Molfile block, or a simplified molecular-input line-entry system (SMILES) code, the converter resolves the structure and renders a clean molecular diagram. PubChem details are added when a matching record is available, while local RDKit-derived molecular properties remain available even when PubChem does not return a match.

The integrated property calculator evaluates molecular weight, calculated LogP, hydrogen bond donors, and hydrogen bond acceptors, providing an immediate assessment against Lipinski's Rule of Five for drug-likeness evaluation.