Click the "Select File" button above, and choose your T04 file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert T04 to another file type
To convert your T04 file to another format, you need Trimble Business Center or other GIS software.
Convert a file to T04
To convert other file formats to the "GPS Data Log" file type, you need software like Trimble Business Center or a similar tool.
About T04 files
The .T04 extension is predominantly associated with proprietary GNSS raw data files generated by Trimble survey receivers, often recording static or kinematic GPS measurements. These files are binary and proprietary, meaning they are locked ecosystems that cannot be opened in standard text editors or GIS viewers like QGIS. A significant catch for surveyors and engineers is that .T04 files require specific conversion utilities (like Trimble's ConvertToRinex) to be usable in third-party processing software. Users often need to convert these to the industry-standard RINEX format for interoperability or to CSV for simple data visualization.
Alternatively, a .T04 file may be a legacy tax return created by Intuit TurboTax for the 2004 tax year. These files are effectively obsolete; opening them requires the specific 2004 version of the software, which is difficult to run on modern operating systems like Windows 11 without a virtual machine. For these files, the primary goal is archival: users urgently need to convert the proprietary data into PDF documents to preserve their financial records without maintaining 20-year-old software.
Convert.Guru analyzes your T04 file, detects the exact format, and lets you read the text inside.
If you want to convert T04 file to T02, CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT or DB, you can use Trimble Business Center or similar software from the "GNSS Raw Data 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 T04, try Trimble Business Center or another comparable tool in the "GNSS Raw Data Logging" category.
The T04 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 T04 converter.