FASTA Sequence Statistics
Gene-Test Bioinformatics Apps
Sequence statistics
for FASTA files — genomes, assemblies, genes, transcripts — supports
.fasta
and
.fasta.gz
Reports sequence count, total bases, N50, GC%, per-sequence GC and length distributions, and per-base composition
Files are
processed locally
in your browser — nothing is uploaded to our server • up to ~500 MB compressed
Select or drop a FASTA file
.fasta • .fasta.gz • .fa • .fa.gz • .fna • .fna.gz
Reading file…
Summary
Sequence length distribution
Per-sequence GC content
Cumulative length (N-curve)
Per-base sequence content
(first 500 positions, averaged across all sequences)
