Click the "Select File" button above, and choose your NEX file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert NEX to another file type
To convert NEX data files to another format, you need Mesquite or other Data software.
Convert a file to NEX
To convert other file formats to the "Bioinformatics Data File" file type, you need software like Mesquite or a similar tool.
About NEX files
The .nex file extension primarily acts as a NEXUS bioinformatics data format used to store phylogenetic trees and complex genetic sequence data. However, the extension is heavily fragmented. It is also used as an Opera Browser Extension package, a compressed game archive for the Nutaku gaming platform, and a continuous neuroscience data file for NeuroExplorer. For bioinformatics, you can open and edit these files with specialized software like Mesquite. For browser extensions, Opera handles them natively, while game archives can often be unpacked using 7-Zip. Managing .nex files is notoriously frustrating because the same extension represents completely different underlying formats. A biologist might struggle with strict syntax errors in text-based NEXUS blocks, making the file fail to load. Meanwhile, everyday users might not realize that an Opera extension or a Nutaku game file is simply a renamed compressed package. These formats lock data away, requiring specific software to parse or extract. To bypass these limitations, conversion or extraction is the most pragmatic approach. For biological data analysis, convert .nex to CSV, TXT, or FASTA for easier spreadsheet integration. For Opera extensions or game archives, convert them to standard ZIP or 7Z formats to access the internal image and code assets.
Convert.Guru analyzes your NEX file, detects the exact format, and lets you read the text inside.
If you want to convert NEX file to ZIP, RAR, 7Z, TAR, GZ, BZ2, XZ, LZMA, CAB, ACE, ARJ or LHA, you can use Mesquite or similar software from the "Phylogenetic Data Storage" category. In the File menu, look for Save As… or Export….
To convert XXE, 7Z, Z, PAK, LHA, DEB, UUE, TAR, LZH, ZIP, PKG or RAR files to NEX, try Mesquite or another comparable tool in the "Phylogenetic Data Storage" category.
The NEX Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our NEX converter.