Click the "Select File" button above, and choose your HMI file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert HMI to another file type
To convert your HMI file to another format, you need Nextion Editor or other Developer software.
Convert a file to HMI
To convert other file formats to the "Human Machine Interface Project" file type, you need software like Nextion Editor or a similar tool.
About HMI files
The .HMI extension is a classic example of file format fragmentation, representing three distinct, incompatible data types that often confuse users.
Industrial & Embedded Projects (Most Common): These are project files created by Nextion Editor for HMI (Human Machine Interface) touch displays, or archive files for Siemens WinCC. These files act as containers for GUI designs, scripts, and assets used to control industrial machinery or embedded systems.
The Problem: They are strictly proprietary. You cannot view the interface designs without installing heavy, vendor-specific IDEs (Integrated Development Environments). They are useless for web display or easy sharing.
The Solution: For documentation or review, users typically convert these project screens to PDF documents or raster images like PNG and JPG. While the logic code is often text-based, the visual layouts require the original software to render before conversion.
Legacy Audio (Game Assets): Originating from the DOS era, this is a MIDI-like sequence format developed by Human Machine Interfaces, Inc. (middleware later acquired by Miles Design). Found in classic games like The Elder Scrolls: Arena or Descent.
The Problem: Modern media players (VLC, Windows Media Player) generally do not support the HMI Sound Operating System format. The music is locked inside obsolete code.
The Solution: Audiophiles and retro-gamers must convert these to standard MIDI files for editing, or render them to MP3 or WAV for listening on modern devices.
Humax PVR Metadata: These serve as sidecar information files for video recordings made by Humax set-top boxes.
The Problem: The .HMI file itself contains no video; it is merely a text/binary map for the associated video stream (often TS). Trying to play it results in errors.
The Solution: Conversion involves processing the associated video file, often merging the metadata, to produce a standard MP4 or MKV container.
Use Convert.Guru to open and convert your HMI file.
If you want to convert HMI file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use Nextion Editor or similar software from the "HMI Display Project File" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to HMI, try Nextion Editor or another comparable tool in the "HMI Display Project File" category.
The HMI 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 HMI converter.