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

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.

Advanced Cheminformatics in Your Browser

The ChemAI SMILES to Structure Converter is a powerful, free online tool designed for researchers, students, and professionals in computational chemistry and drug discovery. By leveraging the WebAssembly port of the industry-standard RDKit library, we bring robust cheminformatics capabilities directly to your web browser without requiring backend server processing. This ensures your proprietary chemical structures remain private and secure on your local machine.

Comprehensive Molecule Visualization and Analysis

Whether you need to convert a complex IUPAC name, a standard InChI string, or a simplified molecular-input line-entry system (SMILES) code, our engine resolves and renders the exact 2D topology instantly. Beyond standard 2D vector graphic generation (SVG), our integration with PubChem and 3Dmol.js allows you to visualize interactive 3D conformers and safely download high-resolution 3D structural images for presentations and scientific publications.

Additionally, the integrated property calculator instantly evaluates crucial pharmacokinetic parameters, including Molecular Weight, calculated LogP (cLogP), and hydrogen bonding characteristics, providing an immediate assessment against Lipinski's Rule of Five for drug-likeness evaluation.