Click the "Select File" button above, and choose your NDM file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert NDM to another file type
To convert NDM data models to another format, you need Navicat Premium or other Database software.
Convert a file to NDM
To convert other file formats to the "ER Diagram Project" file type, you need software like Navicat Premium or a similar tool.
About NDM files
A .ndm file is primarily a Navicat Data Model, a proprietary format generated by Navicat database administration tools to store visual Entity-Relationship (ER) diagrams and physical database designs. These files contain the layout of tables, foreign keys, and relationships used to architect database structures for systems like MySQL, PostgreSQL, or Oracle.
The primary difficulty with .ndm files is their strict software dependency. They are not standard image files; they act as project containers that only Navicat can interpret and render. Sending an .ndm file to a client or developer who lacks a paid Navicat license renders the file useless, as they cannot view the diagram or extract the schema. Additionally, older versions of the software may struggle to open models created in newer editions due to internal structure changes.
To make these files accessible, the best strategy is converting them to universally viewable formats. For documentation and sharing with stakeholders, convert the diagram to PDF or high-resolution PNG images. For developers who need to implement the design, converting the model to a standard SQL script is essential, as this strips away the visual layer and leaves the raw CREATE TABLE statements. In rare industrial cases, an .ndm file might be an air conditioner backup from Nidec systems, which is actually a masked SQLite database that can often be opened by renaming the extension to db.
Convert.Guru analyzes your NDM file, detects the exact format, and lets you read the text inside.
If you want to convert NDM file to , you can use Navicat Premium or similar software from the "Database Model Diagram" category. In the File menu, look for Save As… or Export….
To convert files to NDM, try Navicat Premium or another comparable tool in the "Database Model Diagram" category.
The NDM 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 NDM converter.