Click the "Select File" button above, and choose your DRN file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert DRN to another file type
To convert DRN files to another format, you need Watercom DRAINS or other Data software.
Convert a file to DRN
To convert other file formats to the "Engineering Model File" file type, you need software like Watercom DRAINS or a similar tool.
About DRN files
A .DRN file primarily functions as a Stormwater Drainage Model created by Watercom DRAINS, a hydraulic modeling software widely used in civil engineering. In other contexts, it can be a drone design file for the video game Nimbatus, a Probabilistic Model Description (Discrete Reward Net) for the Storm model checker, or a visual programming diagram generated by DRAKON Editor. The main disadvantage of the .DRN format is its extreme fragmentation and proprietary nature. A DRAINS engineering file is a closed format that requires an expensive software license to view, making it difficult to share designs with contractors. Standard online converters inevitably fail to process engineering .DRN files because the raw binary data is closed and undocumented. When sharing these files, you need to convert them to accessible formats. For engineering models, the best target formats are .DXF for CAD integration or .PDF for static reporting, though all interactive hydraulic calculations will be lost in the conversion. DRAKON diagrams are best exported to .SVG or .PNG for web viewing. Because the .DRN extension represents completely different structures depending on the creator, it is notoriously difficult to open or convert externally. Often, only the original software can properly read or export the data. If our analysis detects a supported underlying or embedded format - such as a standard .ZIP archive for Nimbatus files or a .SQL database for DRAKON diagrams - viewing or data extraction may still be possible.
Convert.Guru analyzes your DRN file, detects the exact format, and lets you read the text inside.
If you want to convert DRN file to TMP, TEMP, CACHE, LOG, BAK, OLD, NEW, PART, DOWNLOAD, CRDOWNLOAD, LOCK or PID, you can use Watercom DRAINS or similar software from the "Stormwater Drainage Model" category. In the File menu, look for Save As… or Export….
To convert DEVICE, CACHE, SOCK, SYMLINK, PID, MOUNT, FIFO, LOG, PIPE, TMP, JUNCTION or TEMP files to DRN, try Watercom DRAINS or another comparable tool in the "Stormwater Drainage Model" category.
The DRN 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 DRN converter.