Click the "Select File" button above, and choose your F04 file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert F04 to another file type
To convert your F04 file to another format, you need MSC Nastran or other Text software.
Convert a file to F04
To convert other file formats to the "FEA Log File" file type, you need software like MSC Nastran or a similar tool.
About F04 files
A .F04 file is a specific execution summary log generated by MSC Nastran, one of the industry's most widely used Finite Element Analysis (FEA) solvers. Unlike the F06 file, which contains the physics results (stresses, displacements), the .F04 file is dedicated to system performance diagnostics. It details the chronological history of the analysis, tracking database assignments, memory allocation, disk space usage (I/O) statistics, and specific module execution times. Engineers and system administrators rely on this file to debug why a simulation failed due to resource constraints or to optimize runtimes. The biggest obstacle is that while these files are technically ASCII text, they are often generated on Linux clusters or mainframes and can become unwieldy to view without a dedicated log analyzer. They are also tightly coupled with the Nastran workflow, making them obscure to non-analysts. To share these performance metrics with IT departments or archive run logs for compliance, the best approach is to convert the .F04 file to PDF for immutable archiving or TXT to strip any proprietary formatting for universal viewing.
Convert.Guru analyzes your F04 file, detects the exact format, and lets you read the text inside.
Users also converted F03, F05 and F99 files.
FAQ
If you want to convert F04 file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use MSC Nastran or similar software from the "FEA Execution Logging" 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 F04, try MSC Nastran or another comparable tool in the "FEA Execution Logging" category.
The F04 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 F04 converter.