Click the "Select File" button above, and choose your TWF file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert TWF to another file type
To convert TWF documents to another format, you need Casio PC-Sync or other Data software.
Convert a file to TWF
To convert other file formats to the "Personal Information Manager Data" file type, you need software like Casio PC-Sync or a similar tool.
About TWF files
The .TWF file extension is a highly fragmented format primarily associated with legacy data systems, most notably Casio Digital Diaries and Toshiba Word documents. In its most common use case, a .TWF file acts as a proprietary database storing contacts, calendar events, and notes synced from 1990s and 2000s-era Casio personal digital assistants using Casio PC-Sync. Other common variations include technical document containers created by the Taikong Ti-File system or turbine engineering software, as well as orthoimage georeferencing files generated by GIS applications like Agisoft Metashape. Recently, Tableau Software adopted the .TWF extension for Tableau Prep workflow files. The primary disadvantage of the .TWF format is its severe vendor lock-in. Legacy Casio and Toshiba files are stored in undocumented binary structures that modern operating systems and web browsers cannot read. Users face immense frustration because accessing the data requires obsolete software and hardware. Furthermore, because multiple completely unrelated programs share the same .TWF extension, standard online converters constantly fail, misinterpreting the file's internal data structure. Ideally, legacy data should be exported directly from the original software. Casio organizer data should be exported to .CSV for importing into modern contacts apps, while Toshiba Word files should be printed to .PDF. Tableau .TWF files are actually .ZIP archives containing XML data, so extracting them is straightforward if you know the trick. Because this is a closed, proprietary format, standard online converters fail to process it. However, convert.guru provides a practical workaround. Just drag and drop your file to identify the format, view it, and convert it when possible. Our analyzer will inspect the file's hex signature to determine if it is a legacy Casio database, a GIS text file, or a Tableau ZIP archive. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your TWF file, detects the exact format, and lets you read the text inside.
If you want to convert TWF file to SHP, KML, KMZ, GPX, GEOJSON, TOPOJSON, TIF, TIFF, ECW, SID, IMG or DEM, you can use Casio PC-Sync or similar software from the "Legacy Organizer Data Storage" category. In the File menu, look for Save As… or Export….
To convert LAZ, KMZ, DTM, CSV, DEM, PRJ, LAS, GPX, DSM, SHP, DBF or KML files to TWF, try Casio PC-Sync or another comparable tool in the "Legacy Organizer Data Storage" category.
The TWF 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 TWF converter.