Click the "Select File" button above, and choose your TDMS file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert TDMS to another file type
To convert TDMS Data files to another format, you need LabVIEW or other Data software.
Convert a file to TDMS
To convert other file formats to the "Streaming Data File" file type, you need software like LabVIEW or a similar tool.
About TDMS files
A .TDMS file is a Technical Data Management Streaming file created by National Instruments. It stores test and measurement data generated by software like LabVIEW or DIAdem. It is optimized for high-speed read and write operations, storing both raw bulk data and hierarchical metadata in a single binary stream. The primary disadvantage of the .TDMS format is its proprietary, binary nature. You cannot open it in a standard text editor, and standard web browsers do not support it. It requires specialized add-ins to open in spreadsheet software like Microsoft Excel or relies on programming libraries like npTDMS in Python. This strict dependency makes sharing test results with non-engineers or external teams very difficult. Converting .TDMS to standard data formats is highly recommended for data distribution and analysis. Target formats include CSV (Comma Separated Values) or XLSX for easy viewing in spreadsheets, or HDF5 for large-scale external data analysis. Be aware that converting to CSV will flatten the complex hierarchical metadata structure native to the .TDMS format. Because .TDMS is a closed, proprietary file, standard online converters often fail to process it. Usually, only the original NI software can properly read or export the bulk data. Our tool can inspect the internal metadata and, if a supported underlying data structure is detected, help you extract standard data arrays without installing expensive desktop software.
Convert.Guru analyzes your TDMS file, detects the exact format, and lets you read the text inside.
If you want to convert TDMS file to CSV, TXT, MAT, JSON, XML, YAML, YML, TOML, INI, CFG, CONF or DAT, you can use LabVIEW or similar software from the "Test Data Streaming" 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 TDMS, try LabVIEW or another comparable tool in the "Test Data Streaming" category.
The TDMS 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 TDMS converter.