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>> FA file

FA file format description

Many people share .fa files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .fa file can be edited, converted or printed with. On this page, we try to provide assistance for handling .fa files.

1 filename extension(s) found in our database.

.fasta - FASTA Sequence

FASTA file is a FASTA Sequence. In bioinformatics, FASTA format is a text-based format for representing either nucleotide sequences or peptide sequences, in which nucleotides or amino acids are represented using single-letter codes.

.fasta file format description:
FASTA format
Data files
- / -
fa, fna
FASTA Sequence related links:
FASTA Sequence related extensions:
DNA Electropherogram File
ENA EMBL Sequence
FASTA Sequence
GenBank Data

Naturally, other applications may also use the .fa file extension. Even harmful programs can create .fa files. Be especially cautious with .fa files coming from an unknown source!

Can't open a .fa file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .fa file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

af, ta, ga, fx, ea, ba, va, ra, fz, fw, ca

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Serif 3DPlus Model
Vector Approximation Data
Microsoft DirectX D3D Effect
Scifer External Header Archive
BSC Intermediate Object
Fritzing Sketch File

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