ER1 Converter

Extract text from ER1 files

Select File
Drop or upload your .ER1 file

Online File Converter

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How to extract text from your ER1 file

Click the "Select File" button above, and choose your ER1 file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.

Convert ER1 to another file type

To convert your ER1 file to another format, you need erwin Data Modeler or other Developer software.

ER1 to CSV
ER1 to JSON
ER1 to XML
ER1 to YAML
ER1 to YML
ER1 to TOML
ER1 to INI
ER1 to CFG
ER1 to CONF
ER1 to DAT
ER1 to DB
ER1 to SQL

Convert a file to ER1

To convert other file formats to the "Data Modeling File" file type, you need software like erwin Data Modeler or a similar tool.

DBF to ER1
XML to ER1
SQLITE to ER1
XLSX to ER1
SQL to ER1
TSV to ER1
ACCDB to ER1
YAML to ER1
MDB to ER1
CSV to ER1
ODS to ER1
JSON to ER1

About ER1 files

An .ER1 file is a proprietary data modeling diagram created by older versions of erwin Data Modeler, primarily used to map out logical and physical database structures.

Because these files are essentially the blueprints for enterprise-grade databases, they contain complex metadata defining entities, keys, and relationships. The main issue users face is proprietary lock-in: .ER1 files are often binary or heavily formatted text that cannot be interpreted by standard text editors, web browsers, or generic diagramming tools like Microsoft Visio. Opening them typically requires a specific, expensive license for erwin Data Modeler (formerly by CA Technologies, now Quest). This can be a hassle for teams trying to audit legacy systems or share schema designs with stakeholders who do not have the software installed.

Best Conversion Targets:

For Documentation & Sharing: Convert the diagram to PDF, PNG, or JPG. This flattens the complex model into a viewable image, perfect for email attachments or printing.
For Database Implementation: If you need to build the database defined in the file, converting to SQL (DDL scripts) is the standard workflow.
For Interoperability: Convert to XML to attempt importing the schema definitions into other modeling tools.

Convert.Guru analyzes your ER1 file, detects the exact format, and lets you read the text inside.

Users also converted ERWIN, ERX and DAMX files.

The ER1 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 ER1 converter.