How to convert your MDD file
- Click the "Select File" button above, and choose your MDD file.
- You'll see a preview.
- Click the "Convert file to..." button to save your file in the format you want.
Convert MDD to another file type
The converter easily converts your MDD file to various formats - free and online. No Blender or extra software needed.
- MDD to PDF
- MDD to OBJ
- MDD to FBX
- MDD to DAE
- MDD to 3DS
- MDD to MAX
- MDD to BLEND
- MDD to MA
- MDD to MB
- MDD to C4D
- MDD to STL
- MDD to PLY
Convert a file to MDD
The converter also works in reverse, so you can convert other Data formats to MDD with high quality output.
- DWG to MDD
- DAE to MDD
- X3D to MDD
- IGES to MDD
- WRL to MDD
- JT to MDD
- SKP to MDD
- 3DS to MDD
- 3DM to MDD
- OBJ to MDD
- STEP to MDD
- FBX to MDD
About MDD files
The .MDD extension represents two distinct but widespread data formats that often cause confusion due to their incompatibility with standard text editors.
- MDict Resource File: In the dictionary community, an .MDD file acts as a resource container (similar to a ZIP archive) for MDict and GoldenDict. While the companion MDX file holds the text definitions, the .MDD file stores the essential multimedia elements - images, audio pronunciation files, and CSS styles - that make the dictionary interactive. Users often struggle to access these assets individually because the format is a proprietary binary database. To extract images or audio for use elsewhere, or to view the dictionary content on devices that do not support MDict, you must convert these files to standard formats like JPEG, MP3, or HTML.
- IBM SPSS Metadata: In market research, .MDD files serve as the central metadata repository for the IBM SPSS Data Collection (formerly Dimensions). This file defines the structure of a survey - questions, variable types, and logic - rather than holding the participant responses themselves. Researchers frequently encounter "read-only" lock-in where they cannot share this survey logic with stakeholders who lack an SPSS license. Converting an SPSS .MDD to PDF (for printable documentation), XML (for system interoperability), or Word document allows for easier review, archiving, and collaboration.
Use Convert.Guru to open and convert your MDD file.
Users also converted MDX, MMD, PMX, ZIP, PDF, SPE, SPD and SAV files.
The MDD 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 MDD converter.