FREE CHEMDRAW ALTERNATIVE
Draw Molecules Online, Free
Covalent is a free, browser-based molecular structure editor. No installation, no subscription, no registration. Works on any device.
Launch CovalentChemDraw vs Covalent
| Feature | ChemDraw | Covalent |
|---|---|---|
| Price | $$$ / year (subscription) | Free |
| Installation | Desktop install required | None — runs in browser |
| Works on Chromebook | No | Yes |
| Works on mobile | No | Yes |
| Bond drawing tools | Single, double, triple, aromatic, wedge, dash | Single, double, triple, aromatic, wedge, dash |
| Ring templates | Extensive library | Benzene, cyclopentane, cyclohexane, and more |
| SMILES input | Yes | Yes — with instant structure rendering |
| Drug-likeness | Via ChemDraw Ultra only | Built-in Lipinski, Veber, lead-likeness |
| IUPAC naming | Yes | Yes |
| Export formats | CDX, MOL, SDF, PNG, SVG | MOL (JSON), SVG, PNG |
| Keyboard shortcuts | Extensive | Yes — B (benzene), V (select), E (erase), and more |
No Cost
ChemDraw subscriptions cost hundreds per year. Covalent is completely free — for students, teachers, researchers, and everyone else.
No Installation
Open your browser, start drawing. Works on Windows, Mac, Linux, Chromebook, iPad, and phones. Nothing to download or install.
Real Chemistry
SMILES parsing, molecular formula, drug-likeness analysis, and property calculation — not just a drawing tool.