Click the "Select File" button above, and choose your DBML file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert DBML to another file type
To convert DBML Schemas to another format, you need dbdiagram.io or other Developer software.
Convert a file to DBML
To convert other file formats to the "Database Markup Language File" file type, you need software like dbdiagram.io or a similar tool.
About DBML files
The .DBML file extension primarily stands for Database Markup Language. There are two distinct types of .DBML files used by developers. The most common is an open-source Domain-Specific Language (DSL) created by Holistics for dbdiagram.io and tools like DBeaver. It allows developers to quickly type database schemas and generate Entity-Relationship Diagrams (ERDs). The second type is an XML-based file used by Microsoft Visual Studio for LINQ to SQL mapping, which translates relational database objects into .NET models.
Users frequently need to convert .DBML files because they are highly specialized and not universally supported. A dbdiagram .DBML file cannot directly execute on a database server like MySQL or PostgreSQL; it must be converted into standard Data Definition Language. Microsoft's version is tied to a legacy Object-Relational Mapping (ORM) framework that is largely obsolete compared to modern Entity Framework solutions. Sharing these files with non-developers is also challenging, as reading them requires specific IDEs or rendering tools.
The best target format for database deployment is SQL. If you need to share the visual schema layout with management or a team, converting to PDF or PNG is highly recommended, though you will lose the editable text structure. Converting Microsoft .DBML typically involves generating CS (C#) class files or exporting the raw XML structure.
This file format is difficult to open or convert via automated tools because it relies on domain-specific syntax or proprietary application-level XML schemas. Standard online converters fail because interpreting a DSL requires specialized parsing engines. Emphasize that often only the original software can properly read or export the data. However, convert.guru can still identify the file format, inspect the file, and show text or internal content. Just drag and drop your file to identify the format, view it, and convert it when possible. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your DBML file, detects the exact format, and lets you read the text inside.
If you want to convert DBML file to SQL, JS, TS, PY, JAVA, CPP, C, CS, PHP, RB, GO or RS, you can use dbdiagram.io or similar software from the "Database Schema Mapping" 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 DBML, try dbdiagram.io or another comparable tool in the "Database Schema Mapping" category.
The DBML 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 DBML converter.