Click the "Select File" button above, and choose your CSW file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert CSW to another file type
To convert CSW Data files to another format, you need Varian Cary UV Software or other Data software.
Convert a file to CSW
To convert other file formats to the "Instrument Data File" file type, you need software like Varian Cary UV Software or a similar tool.
About CSW files
The .CSW file format is highly fragmented, predominantly used to store either raw scientific measurements or medical telemetry. Its most common application is saving UV-Vis-NIR (Ultraviolet-Visible-Near Infrared) spectroscopy data generated by Varian Cary UV software. Alternatively, it serves as a CPAP therapy data file used by HOFFRICHTER CPAP devices and sleep monitoring software like SleepReport to log patient breathing events during sleep. Because these are proprietary data containers created by niche hardware, they present severe usability challenges. You cannot open a .CSW file natively in web browsers, standard text editors, or basic spreadsheet applications without encountering unreadable binary encoding. Opening them usually requires an active license for Agilent Technologies software or specialized medical dashboard software. Users frequently need to convert .CSW files to open formats like .CSV, .XLSX, or .TXT to perform independent data analysis in tools like Excel or Python. Medical users often prefer converting to .PDF to share sleep compliance reports with doctors. However, standard online converters universally fail to process .CSW files because the internal structures are proprietary, undocumented, and deliberately closed off by the manufacturers. Furthermore, exporting raw data to .CSV often strips away essential calibration metadata or patient profiles. Because this file format is notoriously difficult to open or convert, you often need the original proprietary software to properly read or export the data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible, helping you access your data even without a spectrometer or proprietary sleep software.
Convert.Guru analyzes your CSW file, detects the exact format, and lets you read the text inside.
Users also converted CSV, BSW, FDSW and VTK files.
FAQ
If you want to convert CSW file to ZIP, RAR, 7Z, TAR, GZ, BZ2, XZ, LZMA, CAB, ACE, ARJ or LHA, you can use Varian Cary UV Software or similar software from the "Spectroscopy and CPAP Data Storage" category. In the File menu, look for Save As… or Export….
To convert XXE, 7Z, Z, PAK, LHA, DEB, UUE, TAR, LZH, ZIP, PKG or RAR files to CSW, try Varian Cary UV Software or another comparable tool in the "Spectroscopy and CPAP Data Storage" category.
The CSW 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 CSW converter.