Free bioinformatics tools
Powerful, easy-to-use tools for sequence analysis, structure prediction, and bioinformatics research. All tools run directly in your browser—no installation required.
Converters
Convert between different biological file formats
FASTQ to FASTA
Convert FASTQ sequence files to FASTA format.
TXT to FASTA
Convert plain text sequence files to FASTA format.
PDB to FASTA
Convert Protein Data Bank files to FASTA sequence format.
PDB to SDF
Convert Protein Data Bank files to Structure Data Format.
PDB to MOL2
Convert Protein Data Bank files to MOL2 molecular format.
PDB to CIF
Convert Protein Data Bank files to Crystallographic Information File format.
GenBank to FASTA
Convert your GenBank files to FASTA format.
SDF to PDB
Convert Structure Data Format files to Protein Data Bank format.
Protein tools
Calculate protein parameters, such as molecular weight, amino acid composition, and more.
Protein parameters
Compute physicochemical parameters from protein sequences.
Protein molecular weight
Calculate molecular weight and composition of protein sequences.
Amino acid composition
Analyze the amino acid composition of protein sequences.
Extinction coefficients
Calculate the extinction coefficient of protein sequences.
Aliphatic index
Calculate the aliphatic index of protein sequences.
Instability index
Calculate the instability index of protein sequences.
Protein pI
Calculate the isoelectric point (pI) of protein sequences.
GRAVY index
Calculate the GRAVY index of protein sequences.
Protein to DNA
Reverse translate protein sequences to possible DNA sequences.
Random protein generator
Generate random protein sequences with customizable length and amino acid composition.
Three-to-one converter
Convert three-letter amino acid codes to single-letter codes.
One-to-three converter
Convert single-letter amino acid codes to three-letter codes.
DNA tools
Tools for DNA sequence analysis and manipulation.
Frequently asked questions
Common questions about our bioinformatics tools and platform.