Click the "Select File" button above, and choose your STN file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert STN to another file type
To convert your STN file to another format, you need CRU Data or other Data software.
Convert a file to STN
To convert other file formats to the "Research Data File" file type, you need software like CRU Data or a similar tool.
About STN files
The .stn extension is a notoriously ambiguous container that serves three distinct, incompatible industries: climate science, diamond manufacturing, and digital imaging. Most commonly, it represents Climate Research Unit (CRU) station data - raw, fixed-width ASCII text files used to track historical temperature and precipitation. While technically readable, these files are poorly formatted for modern tools; opening them directly in Microsoft Excel often breaks column alignment, necessitating conversion to structured CSV or XLSX for analysis. In the jewelry sector, an .stn file is a proprietary Sarin diamond plan, containing high-precision 3D geometry of rough stones. These are strictly locked to industrial hardware, creating significant friction for users trying to archive designs or share them with clients who lack the $5,000+ software. Additionally, legacy photographers may encounter Genuine Fractals (now ON1) images, which used fractal algorithms to compress files before the ubiquity of high-speed internet. These "lossless" archives are now digital dead ends, unsupported by standard browsers or viewers. To regain access, users must convert data logs to Excel, industrial models to PDF or OBJ, and legacy images to standard TIFF or JPG.
Convert.Guru analyzes your STN file, detects the exact format, and lets you read the text inside.
If you want to convert STN file to SVG, AI, EPS, PDF, JPG, CDR, WMF, EMF, SWF, FLA, XFL or SKETCH, you can use CRU Data or similar software from the "Climate Research Data" category. In the File menu, look for Save As… or Export….
To convert AFPUB, EPS, FIG, VSD, SKETCH, VDX, AFPHOTO, PDF, AFDESIGN, SVG, VSDX or AI files to STN, try CRU Data or another comparable tool in the "Climate Research Data" category.
The STN 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 STN converter.