FASTA file format is used for storing DNA sequences, and is popular among scientist and scientific communities. FASTA is a database file used for storing data on nucleid acids or protein sequences.

FASTA files allows users to add comments or adnotations. FASTA stores data in text format and is supported by many bioinformatics software tools. Nucleaotides data store in FASTA files use standard abbreviation codes (for example, C for cytosine).