Free Chemist Tools Hub

This folder hosts free, dedicated chemistry tools. Each tool has its own page for direct sharing, SEO discoverability, and focused usage.

SMILES to Structure

Paste a SMILES string and visualize the 2D structure instantly using SmilesDrawer.

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SMILES to 3D Structure Converter

Render molecules in lightweight 3D and download PNG, JPG, SDF, XYZ, PDB, MOL, OBJ, and X3D formats.

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Protein Viewer (3Dmol.js)

Load proteins by PDB ID or local file, switch rendering styles, and export key file/image formats.

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MOL to SMILES Converter

Convert MOL/SDF structure blocks to SMILES using a free web converter workflow.

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SMILES to PDB Converter

Convert a SMILES string into a downloadable 3D PDB file for modeling workflows.

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SMILES to PDBQT Converter

Convert a SMILES string to PDBQT for docking and AutoDock-style technical workflows.

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PDB to PDBQT Converter

Transform raw PDB coordinate files into PDBQT format with browser-side conversion.

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SMILES to InChI Converter

Generate standard InChI identifiers from SMILES strings for indexing and publication workflows.

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SMILES to InChIKey Converter

Convert SMILES to compact InChIKey identifiers for database search and deduplication.

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InChI to SMILES Converter

Convert InChI strings from papers and registries back into editable SMILES.

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InChIKey to SMILES Converter

Resolve InChIKey values to canonical SMILES using public chemistry APIs.

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SMILES to MOL Converter

Convert SMILES strings to MOL format for ELN/editor compatibility workflows.

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SMILES to SDF Converter

Generate SDF output from SMILES for screening datasets and cheminformatics workflows.

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PDB to SMILES Converter

Convert ligand PDB text blocks into SMILES in a best-effort conversion flow.

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IUPAC Name to SMILES Converter

Convert systematic names into SMILES strings for structure-first workflows.

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SMILES to IUPAC Name Converter

Generate IUPAC names from SMILES to support reports and publication writing.

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MOL2 to SMILES Converter

Convert MOL2 ligand blocks to SMILES for normalization and data cleanup.

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CID to SMILES Converter

Resolve PubChem CIDs to canonical SMILES using official PUG REST endpoints.

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SMILES to MOL2 Converter

Convert SMILES strings into MOL2 files for docking and ligand preparation workflows.

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SDF to InChI Converter

Convert SDF/MOL structure blocks into standard InChI for indexing and data normalization.

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SDF to InChIKey Converter

Generate InChIKey identifiers from pasted SDF or MOL blocks in one step.

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InChI to InChIKey Converter

Convert full InChI strings into compact InChIKey values for faster search.

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InChIKey to InChI Converter

Resolve InChIKey identifiers to full InChI strings using public chemistry APIs.

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MOL to InChI Converter

Convert MOL/SDF text blocks into standard InChI for publication-ready identifiers.

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MOL to InChIKey Converter

Convert MOL/SDF structures to compact InChIKey strings for registries and dedupe.

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Interactive Periodic Table

Explore all 118 elements with searchable metadata including electron configuration, phase, and atomic mass.

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Solution Prep Calculator

Compute solute mass required for your target molarity and final solution volume.

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Dilution Calculator

Apply C1V1=C2V2 to find stock volume and solvent volume for lab dilutions.

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Molarity Calculator

Calculate molarity from mass, molecular weight, and final volume with a dedicated standalone tool page.

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Molality Calculator

Calculate molality from solute amount and solvent mass for quick concentration checks.

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Chemical Equation Balancer

Balance molecular equations by element conservation with step-by-step guidance, presets, and technical background.

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TLC Diagram Tool

Access TLC workflow guidance and jump into the interactive TLC builder in MolDraw.

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