Free Phylogenetic Tree Generator for Newick, FASTA & Taxa

Paste a complete Newick string into Newick mode and check the live tree. The parser preserves nested topology, taxon labels, internal labels, and numeric branch lengths after colons. Export the result as SVG or PNG, or download Newick to continue annotation in another phylogenetics tool.

Use aligned FASTA mode for small sets of homologous DNA, RNA, or protein sequences with equal aligned length. The browser calculates uncorrected pairwise distances and builds a UPGMA tree. Treat the result as a quick distance-based check, not a substitute for model selection or maximum-likelihood inference.

Enter one unique species, gene, or taxon per line in Species list mode. The Phylogenetic Tree Generator arranges those labels into a balanced cladogram for classroom lectures and worksheets or early layout drafts. It does not infer evolutionary relationships because the input contains no molecular or character evidence.

A phylogenetic tree may encode evolutionary change or time in its branch lengths, while a cladogram communicates branching order only. Both can show the same topology, but equal-looking cladogram branches have no quantitative meaning. Check the scale bar and method description before interpreting distance or divergence.

Export SVG when you need an editable vector figure for a journal, thesis, or design application. Choose PNG for slides and documents or quick sharing. Download Newick when another phylogenetics or annotation tool needs the topology with labels and branch lengths as reusable tree data.

Core generation and SVG, PNG, or Newick downloads work without an account or watermark. Sign-in is only required when you send the generated SVG to PaperBanana Studio for cloud project storage and further editing. Local parsing and direct file export remain available on the tool page.

Newick parsing, species-list layout, pairwise distance calculation, and UPGMA run locally in the browser during core generation. The page does not upload those inputs for preview or direct download. Data is sent only when you explicitly choose a cloud feature such as opening the SVG in Studio.

UPGMA is suitable only when its approximately constant-rate assumption fits the data and the method is reported transparently. For publication claims, verify alignment quality, distance correction, taxon sampling, branch support, and model assumptions. Maximum-likelihood or Bayesian inference is often more appropriate for complex evolutionary histories.