Extract text from GROMACS trajectory files (TRR)
To convert TRR trajectories to another format, you need GROMACS or other Data software.
To convert other file formats to the "Simulation Trajectory File" file type, you need software like GROMACS or a similar tool.
The .TRR file is a binary molecular dynamics trajectory file created by GROMACS. It records the complete state of a molecular simulation over time, storing full-precision atomic coordinates, velocities, and forces. Researchers use these files to analyze protein folding, chemical reactions, and material properties. Specialized scientific software like VMD or PyMOL is typically required to visualize the structural data within these files.
The primary disadvantage of the .TRR format is its massive file size. Because it uses uncompressed, high-precision binary data to track every atom, a single simulation file can easily exceed 100GB. It is also a highly proprietary scientific format. You cannot open it in a standard text editor or a web browser. Without a dedicated command-line environment or Python libraries like MDAnalysis, the raw data is entirely inaccessible to average users.
Users often need to convert .TRR files to smaller, more practical formats for sharing and analysis. The best conversion target is the XTC format, a compressed trajectory that drops velocities and forces to drastically save disk space. You can also extract individual static frames to standard PDB (Protein Data Bank) or GRO files. Standard online converters fail to process .TRR files because they lack the complex computational chemistry libraries required to read the specific binary arrays.
This file format is difficult to open or convert. Often, only the original GROMACS toolkit can properly read or export the trajectory data. However, convert.guru offers a pragmatic workaround. Just drag and drop your file to identify the format, view its internal metadata, and convert it when possible. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible directly in your browser.
Convert.Guru analyzes your TRR file, detects the exact format, and lets you read the text inside.
Users also converted RTP, ENE, TPB and XTC files.
If you want to convert TRR file to XTC, CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT or DB, you can use GROMACS or similar software from the "Molecular Dynamics Trajectory Storage" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to TRR, try GROMACS or another comparable tool in the "Molecular Dynamics Trajectory Storage" category.
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 TRR converter.