Click the "Select File" button above, and choose your HMS file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert HMS to another file type
To convert HMS Project files to another format, you need HEC-HMS or other Data software.
Convert a file to HMS
To convert other file formats to the "Engineering Data File" file type, you need software like HEC-HMS or a similar tool.
About HMS files
The .HMS file extension primarily serves two highly specialized engineering functions. Most commonly, it is a ZIP-compressed measurement data and report file generated by Hexagon Metrology PC-DMIS. In other contexts, it is a Hydrologic Modeling Project file used by the US Army Corps of Engineers' HEC-HMS software to simulate precipitation-runoff processes. Both formats are proprietary and highly restrictive. Users frequently need to convert these files because sharing raw .HMS data with clients or stakeholders who lack expensive metrology software or specialized hydrologic modeling tools is impossible. The major disadvantage of the .HMS format is data lock-in. To bypass these limitations, users often extract the underlying ZIP archive (for PC-DMIS files) to retrieve accessible formats like CSV or TXT, or convert HEC-HMS reports to PDF for universal viewing.
Standard online converters typically fail to process .HMS files because they lack the specific parsing logic for these niche engineering tools. Only the original software can properly read or export the complex geometric or hydrological data. However, you can just drag and drop your file onto convert.guru to identify the format, view it, and convert it when possible. Our system can inspect the file, reveal internal text, and if our analysis detects a supported underlying or embedded format like a ZIP container, viewing or conversion may still be possible.
Convert.Guru analyzes your HMS file, detects the exact format, and lets you read the text inside.
Users also converted CONTROL, BASIN and LYS files.
FAQ
If you want to convert HMS file to EXE, MSI, APP, DMG, DEB, RPM, PKG, RUN, SH, BAT, CMD or COM, you can use HEC-HMS or similar software from the "Measurement and Hydrologic Modeling" category. In the File menu, look for Save As… or Export….
To convert JAR, APP, SCR, IPA, COM, AAB, PS1, DMG, VBS, EXE, XAPK or MSI files to HMS, try HEC-HMS or another comparable tool in the "Measurement and Hydrologic Modeling" category.
The HMS 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 HMS converter.