How do I open a .FASTA file on Windows or Mac?

You can open .FASTA files using NCBI BLAST, UCSC Genome Browser, SnapGene, UGENE, Biopython, MEGA (Molecular Evolutionary Genetics Analysis). If you do not have native software installed, you can use OpenAnyFile's free File Identifier or convert .FASTA to a standard format in your browser.

Is a .FASTA file safe to open?

This format carries a safety rating of Low Risk. Text file starting with a header line beginning with a greater-than (>) symbol

Can I convert a .FASTA file to other formats?

Yes! .FASTA can be converted to formats such as .FASTQ, .PHY directly in your web browser.

What should I do if a .FASTA file is corrupted or won't open?

If your .FASTA file displays an invalid header or signature error, check its magic bytes hex header (Varies) using OpenAnyFile's Magic Byte Detector or follow our step-by-step file repair guide.

How do I open .FASTA files?

You can open .FASTA files using NCBI BLAST, UCSC Genome Browser, SnapGene, UGENE, Biopython, MEGA (Molecular Evolutionary Genetics Analysis).

Medical & Science • MIME: text/plain

.FASTA – FASTA File Format

Q: What is a .FASTA file?

A .FASTA file is a FASTA File Format associated with Medical & Science. FASTA (often .fa or .fasta) is a text-based format for representing nucleotide or amino acid sequences, where nucleic acids or proteins are represented using single-letter codes.

FASTA (often .fa or .fasta) is a text-based format for representing nucleotide or amino acid sequences, where nucleic acids or proteins are represented using single-letter codes.

Primary Category Medical & Science

MIME Type text/plain

Magic Bytes Signature Varies

Security Risk Rating Low Risk

Recommended Software to Open .FASTA

NCBI BLAST

windows, mac, linux • Free

UCSC Genome Browser

windows, mac, linux • Free

SnapGene

windows, mac, linux • Free

UGENE

windows, mac, linux • Free

Biopython

windows, mac, linux • Free

MEGA (Molecular Evolutionary Genetics Analysis)

windows, mac, linux • Free