Bioinformatics utility

FASTA generator

Create valid FASTA files from scratch with confidence. Set your sequence type, choose a length, and export a clean, ready-to-use file.

Sequence settings

✓ Auto-saved

Sequence labelUsed after the > header symbol

Sequence type

DNARNAProtein

Sequence length

bp / aa

240

Line widthRecommended: 60 characters per line

Generation optionsRandomize sequenceUse uppercase letters

⌘ Enter

.FASTA

Total length240 bp

GC content50.0%

Lines4

FormatFASTA

⌘

Quick tip

FASTA headers should be short and descriptive. Avoid spaces when sharing sequences with command-line tools.