HDL Converter

Extract text from hardware description files (HDL)


Drop or upload your .HDL file

How to extract text from your HDL file

  1. Click the "Select File" button above, and choose your HDL file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert HDL to another file type

To convert HDL hardware files to another format, you need Nand2Tetris Hardware Simulator or other Developer software.

Convert a file to HDL

To convert other file formats to the "Hardware Description Language" file type, you need software like Nand2Tetris Hardware Simulator or a similar tool.


About HDL files

The .HDL file extension primarily represents a Hardware Description Language file used in the educational Nand2Tetris project. These plain-text files define the architecture of logic gates and computer chips using a simplified, custom syntax. Alternatively, it can be a LiDAR sensor calibration file generated by Velodyne Lidar hardware (often storing data in a standard JSON structure) or a library file for HotDocs document automation software.

The primary disadvantage of the Nand2Tetris .HDL format is its highly specialized, educational syntax. Standard code editors lack native syntax highlighting for it, and professional electronic design automation (EDA) tools like Quartus or Vivado cannot open it, as they require industry-standard V (Verilog) or VHD (VHDL) formats. Velodyne calibration files are equally niche, tying strictly to proprietary sensor hardware.

To share or edit these files more easily, you may want to convert Nand2Tetris logic to standard TXT or manually translate it to V for real-world FPGA deployment. Velodyne files can often be parsed simply by changing the extension to JSON.

Standard online converters will fail to process .HDL files because the extension is shared by wildly different applications, ranging from hardware simulation to document templates. Often, only the original software can properly read or export the data. However, just drag and drop your file to identify the format, view it, and convert it when possible on convert.guru. Since our analysis often detects a supported underlying format like plain text or JSON, viewing and extracting the internal content is usually successful.

Convert.Guru analyzes your HDL file, detects the exact format, and lets you read the text inside.

Users also converted HTML, PDF, F90, CLJ and ERL files.


FAQ

If you want to convert HDL file to JS, TS, PY, JAVA, CPP, C, CS, PHP, RB, GO, RS or SWIFT, you can use Nand2Tetris Hardware Simulator or similar software from the "Hardware Simulation or Sensor Data" category. In the File menu, look for Save As… or Export….

To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to HDL, try Nand2Tetris Hardware Simulator or another comparable tool in the "Hardware Simulation or Sensor Data" category.



The HDL 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 HDL converter.