DNA Sequence Utilities

Quick, independent sequence transforms — reverse complement, bisulfite conversion, FASTA ⇄ column reformatting, and cluster sequences by homology.

A growing toolbox of one-click DNA text transforms. Paste one or more sequences (FASTA, tab-delimited "name sequence", or a single bare sequence), pick an operation below, and the result appears in the Result tab ready to copy or download.

Retrieve from NCBI by accession — chromosomes (NC_), mRNA (NM_), RefSeq contigs
Upload local FASTA file — plain FASTA, multi-FASTA, or sequences
Operations
Strand transforms
Case
Methylation
Reformat & report
Clustering
Shared k-mers %

More transforms will be added here over time — each is independent, so this list will keep growing.

Need details? Supported input formats and each operation are documented in Help: Sequence Utilities
Exporting results: click inside the result area → Ctrl+ACtrl+C → paste into Excel.