What is an MDF file and why do I need to convert it?

An MDF file is the primary data file for a SQL Server database. You need to convert MDF files when migrating to another database engine, creating offline archives, exporting data for reporting, performing forensic analysis, or accessing data when SQL Server is unavailable.

Do I need SQL Server installed to convert MDF files?

No. Univik MDF Converter reads the MDF format directly without requiring SQL Server, SSMS or any database engine installation.

Which SQL Server editions are supported?

All editions from SQL Server 2000 through SQL Server 2022 are supported, including Express, Standard, Enterprise, Developer and Web editions in both 32-bit and 64-bit versions.

Can I convert a corrupted MDF file?

Yes. The advanced recovery engine extracts accessible table data from detached, orphaned or mildly corrupted MDF files that SQL Server can no longer attach.

Univik MDF File Converter

Excellent TrustRating 4.8 (318 reviews)

Convert & Export SQL Server MDF Data

Univik MDF Converter is professional Windows software to export SQL Server MDF database data to CSV, Excel, MySQL, PDF, JSON, XML and 10+ formats - no SQL Server installation required. Supports all editions from SQL Server 2000 through 2022 with complete data integrity.

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*Free trial exports first 50 rows per table. Full version for unlimited conversion.

No SQL Server Required: Read and convert MDF files directly without any database engine, SSMS or server configuration on your machine.
All SQL Server Editions: Express, Standard, Enterprise, Developer and Web editions from SQL Server 2000 through 2022.
10+ Export Formats: Convert to CSV, Excel, MySQL, SQLite, PDF, HTML, JSON, XML, SQL scripts and Access databases.
100% Offline & Secure: Desktop software processes databases locally - your sensitive data never leaves your computer.

Univik MDF Converter Box

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Certified Clean by 70+ Antivirus Engines. No malware, spyware, or adware.

Supported SQL Server Editions

SQL Server 2022

SQL Server 2019

SQL Server 2017

SQL Server 2016

SQL Server 2014

SQL Server 2012

SQL Server 2008 R2

SQL Server 2005

SQL Server 2000

Express Edition

Export Options

10+ Output Formats

Export your SQL Server MDF database into formats compatible with spreadsheet tools, database engines, web applications and archival systems.

Available Export Formats

Spreadsheet Formats

CSV, Excel XLSX, ODS

Open table data directly in Excel, Google Sheets or LibreOffice. Each table exports as a separate sheet or file.

Database Formats

MySQL, SQLite, Access MDB

Direct database migration with schema, indexes and relationships preserved in the target engine.

Document Formats

PDF, HTML, RTF, TXT

Archive database tables as readable documents for reporting, legal discovery or long-term storage.

Developer Formats

JSON, XML, SQL Script

Export structured data and INSERT scripts for direct use in web applications, APIs and migration pipelines.

Key Features

Why Choose Univik MDF Converter

Professional-grade software built for DBAs, developers and forensic analysts - with the power to handle any SQL Server MDF file cleanly.

Batch Table Conversion

Export multiple tables simultaneously in a single operation. Select specific tables or export the entire database schema at once. Handles databases with hundreds of tables efficiently without manual repetition.

Live Data Preview

Browse all tables, views and records before converting. Full data grid with sortable columns, row counts and pagination. Verify content, spot errors and select exactly what you need before exporting. Need read-only browsing without converting? The free MDF Viewer is designed for that.

Schema Migration

Export full database schema alongside data: table definitions, column types, primary keys, foreign keys, indexes and constraints. Re-create the entire database structure in the target system with one export.

Row and Column Filtering

Export only the data you need. Filter rows by column value, date range or custom SQL-like conditions. Select specific columns to include or exclude. Perfect for GDPR-compliant exports or targeted data extraction.

Data Type Preservation

All SQL Server data types handled precisely: VARCHAR, NVARCHAR, DATETIME, DECIMAL, VARBINARY, XML, uniqueidentifier (GUID), spatial types and more. Values convert to the closest equivalent in the target format with no data truncation.

Referential Integrity Export

Foreign key relationships and constraint definitions exported in correct dependency order. SQL script output generates tables before inserting data, with referential integrity maintained so the target database imports cleanly on the first attempt.

Corrupted MDF Recovery

Advanced recovery engine reads accessible table data from detached, offline or mildly corrupted MDF files that SQL Server can no longer attach. Extracts maximum recoverable rows from each table before any repair attempt.

100% Offline Processing

No SQL Server, no SSMS, no internet connection, no cloud upload. Everything runs locally on your Windows machine. Your database contents remain completely private - ideal for sensitive financial, medical or legal data.

How It Works

Simple Conversion Steps

Convert your SQL Server MDF database to any format in four easy steps.

Step 1: Open MDF File

Launch MDF Converter and click "Open File" to load your SQL Server MDF database file.

Step 2: Preview Data

Browse tables, view schema and preview records. Apply row/column filters as needed.

Step 3: Select Format

Choose tables to export and select your desired output format from 10+ options.

Step 4: Convert

Click Convert. Files export to your destination folder instantly.

Quick Start Guide

Download & Install: Download Univik MDF Converter and install on Windows. No prerequisites required.
Open MDF File: Click "Open File" and browse to your SQL Server MDF file. Schema tree loads instantly.
Select Tables: Check the tables you want to export. Use filters to narrow rows or columns if needed.
Choose Format: Pick CSV, Excel, MySQL, JSON or any supported output format.
Convert: Click Convert, select destination folder. Export completes in seconds to minutes depending on data size.

Comparison

Univik vs Other Solutions

See how Univik MDF Converter compares to manual SQL scripts, online tools and other converters.

Univik MDF Converter

10+ Export Formats: CSV, Excel, MySQL, SQLite, PDF, HTML, JSON, XML, SQL scripts and Access.
No SQL Server Needed: Works on any Windows machine without database engine installation.
All Editions: Supports SQL Server 2000 through 2022, Express through Enterprise.
Batch Export: Convert all tables in one operation - no manual repetition per table.
Full Preview: Browse records before exporting to verify data quality.
Schema Export: Table definitions, keys and indexes exported alongside data.
Row Filtering: Export only matching rows based on column values or date ranges.
Corrupted MDF: Recovery engine extracts readable data from damaged files.
Offline & Private: No internet, no cloud, no data upload ever.

Manual Scripts & Online Tools

Requires SQL Server: Manual BCP/SSMS export requires a running SQL Server instance.
Limited Formats: SQL scripts only produce SQL - no Excel, JSON or PDF output.
One Table at a Time: Manual export requires scripting every table individually.
No Preview: Export blindly without verifying row content or counts.
No Filtering: Exporting subsets of data requires custom SQL queries.
Schema Loss: Online CSV tools strip constraints and index definitions.
Privacy Risk: Online tools upload your sensitive database to third-party servers.
No Recovery: Cannot process detached or corrupted MDF files.
Technical Skill Required: Scripting BCP or SSMS exports requires DBA knowledge.

Customer Reviews

What Our Customers Say

Real testimonials from DBAs, developers and forensic analysts who converted their SQL Server databases.

Daniel W.

Senior DBA, Frankfurt, Germany

"Our SQL Server licence expired and we needed all data exported before decommissioning the server. Univik MDF Converter let us pull every table to CSV and MySQL in under an hour without spinning up a new instance. Saved us days of work."

Priya S.

Digital Forensics Analyst, Bengaluru, India

"I regularly extract MDF files from seized devices as evidence. This tool opens them offline, no server setup, and lets me export the exact tables I need as PDF reports for the courtroom. The offline processing is critical for chain of custody."

Carlos M.

Backend Developer, Madrid, Spain

"We migrated a legacy .NET app from SQL Server to MySQL. The schema export with foreign keys in the right order saved me two days of manual scripting. The JSON export also let us seed our new API's development database instantly."

Technical Data Sheet

Technical Specifications

Complete product specifications, system requirements and compatibility information.

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Verified by 70+ antivirus engines. 100% safe to download and use.

Virus free
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Supported Input File

MDF - SQL Server Primary Data File:
• SQL Server 2000, 2005, 2008, 2008 R2
• SQL Server 2012, 2014, 2016, 2017
• SQL Server 2019, 2022
• Express, Standard, Enterprise, Developer
• Detached, offline and corrupted files
Unlimited database size supported.

Product Name:	Univik MDF File Converter
Version:	6.3 (Latest)
File Size:	18.4 MB
License Delivery:	Instant via Email
Free Trial:	Free Download 100% Safe & Secure

Latest Release

Version 6.3 Features

Direct MySQL 8.x export
JSON Lines format support
Improved large table handling
Advanced column-level filtering
SQL Server 2022 full support

Trial Limitations:

Free demo allows unlimited schema browse and data preview. Export limited to first 50 rows per table. Purchase license for unlimited conversion.

Hard Disk:	50 MB free (500 MB recommended for large exports)
RAM:	2 GB minimum (4 GB recommended for large databases)
Processor:	Intel Core i3 or equivalent

Platforms:

Windows: 11, 10, 8.1, 8, 7 (32 & 64-bit)
Server: 2022, 2019, 2016, 2012

Prerequisites:

Standalone: No SQL Server, SSMS or .NET Framework required
Offline: Works without internet connection after install
No DBA Skills Needed: Guided export wizard for non-technical users

Migration Guides

Step-by-Step Migration Paths

Detailed guides for migrating SQL Server MDF data to popular database platforms and formats.

SQL Server to MySQL

Common scenario: Legacy Windows app moving to Linux stack

Open MDF file in Univik MDF Converter
Browse schema - verify tables and relationships
Select MySQL as output and set connection or file target
Run export - schema and data import in dependency order

View Full Guide

SQL Server to Excel / CSV

Common scenario: Export data for reporting or handoff to non-technical team

Open MDF file and select target tables
Apply column filters to remove internal-only fields
Choose Excel XLSX or CSV as output format
Each table exports as a separate worksheet or file

View Full Guide

SQL Server to JSON / API

Common scenario: Seed a new web API or NoSQL database from legacy data

Open MDF file in Univik MDF Converter
Preview and filter rows to desired export set
Select JSON or JSON Lines as output format
Use exported files directly in API or NoSQL import

View Full Guide

Use Cases

Who Benefits from MDF Converter

Real-world scenarios where Univik MDF Converter provides the ideal data extraction and migration solution.

Database Migration Projects

IT teams migrating legacy SQL Server workloads to MySQL, PostgreSQL or cloud databases. Batch export all tables with schema and relationships in one pass.

Digital Forensics & eDiscovery

Forensic analysts extracting database evidence from seized MDF files offline. PDF and CSV exports provide court-admissible records without altering original files.

Compliance & Audit Archiving

Organizations archiving SQL Server data for GDPR, HIPAA or SOX compliance. Export filtered data sets as PDF or Excel reports for regulatory submissions and audit trails.

Decommissioning & Backup

Exporting all data before decommissioning a SQL Server or letting a licence expire. Create permanent, format-agnostic archives that don't require SQL Server to read.

Disaster Recovery

Recovering data from a detached or corrupted MDF after server failure. Extract readable rows from damaged databases before committing to a costly restore operation.

Developer Data Seeding

Developers seeding staging or development environments from production MDF backups. JSON and SQL script exports integrate directly into CI/CD pipelines and new platform deployments.

File Locations

Where to Find MDF Files

Quick reference guide to locate SQL Server MDF database files on your system.

SQL Server Default Data Path

SQL Server 2012 and later:

C:\Program Files\Microsoft SQL Server\MSSQL[version].MSSQLSERVER\MSSQL\DATA\

SQL Server 2008 R2:

C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA\

SQL Server Express:

C:\Program Files\Microsoft SQL Server\MSSQL[version].SQLEXPRESS\MSSQL\DATA\

Replace [version] with the numeric version (e.g. MSSQL16 for 2022, MSSQL15 for 2019)

Finding MDF Path via SQL Server

Query the current data path (run in SSMS):

SELECT name, physical_name FROM sys.database_files WHERE type_desc = 'ROWS';

Find all MDF files via Windows Search:

Search in Explorer: *.mdf (include system locations)

The MDF file is the primary data file. Each database also has an LDF (log) file - you only need the MDF for conversion.

Detaching an MDF from SQL Server

Detach via SSMS:

Right-click database → Tasks → Detach
Check "Drop Connections" and click OK
MDF is now free to copy and open in Univik MDF Converter

Or detach via T-SQL:

EXEC sp_detach_db 'YourDatabaseName', 'true';

Univik MDF Converter can also open MDF files directly without detaching - useful for read-only forensic access.

Restoring from Backup (.BAK)

If you only have a .BAK file:

Restore the BAK to get the MDF: use SSMS Restore Database, or use a BAK recovery tool
Once restored or extracted, open the MDF in Univik MDF Converter
Export tables to your desired format without keeping SQL Server running

Common scenario: recovering data from an old server backup when the original SQL Server is no longer available.

Help & Support

Frequently Asked Questions

Find answers to common questions about Univik MDF Converter.

An MDF (Master Database File) is the primary data file for a SQL Server database. It stores all tables, views, stored procedures and data. You need to convert MDF files when: (1) Migrating to another database engine such as MySQL or SQLite, (2) Exporting data for reporting in Excel or PDF, (3) Recovering data after SQL Server failure, (4) Archiving databases before decommissioning a server, or (5) Performing forensic analysis on seized database evidence. If you only need to browse and inspect an MDF file without converting anything, the free Univik MDF Viewer is the right starting point.

No, SQL Server is not required. Univik MDF Converter reads the MDF file format directly using its own engine. You do not need SQL Server, SQL Server Management Studio (SSMS), .NET Framework or any other prerequisites. Install the converter and open your MDF file immediately on any Windows PC.

All editions and versions are supported: SQL Server 2000, 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017, 2019 and 2022. Supported editions include Express, Standard, Enterprise, Developer and Web editions in both 32-bit and 64-bit versions. The converter also handles MDF files from SQL Server LocalDB and SQL Server Compact.

Yes. The built-in recovery engine reads accessible table data from detached, offline and mildly corrupted MDF files that SQL Server can no longer attach. Severely corrupted files may have partial data, but the converter extracts as many readable rows as possible before any repair operation - giving you a data snapshot for immediate use.

Yes, unlimited database size. Univik MDF Converter uses efficient streaming export to handle large databases. Tested with MDF files exceeding 50 GB and individual tables containing tens of millions of rows. Memory usage remains stable regardless of table size through paginated data processing.

Row and column filtering is built in. Before exporting, use the filter panel to: (1) Select which columns to include in the export, (2) Filter rows by column value (equals, contains, greater than, etc.), (3) Filter by date range on any date/datetime column, (4) Exclude NULL rows. This is especially useful for GDPR-compliant exports where certain PII columns must be excluded.

Your data is completely safe and private. Univik MDF Converter is a desktop application that works 100% offline. Your database contents are never uploaded to any server. All processing happens locally on your computer. No telemetry, no cloud storage, no third-party data sharing. Ideal for sensitive financial, medical and legal databases.

Yes, full schema migration. The MySQL export includes: table definitions with correct data type mapping, primary keys, foreign key constraints, unique indexes, non-unique indexes and CHECK constraints. Tables are exported in foreign key dependency order so the import script runs without disabling constraint checks. The SQL script is ready to execute directly in MySQL Workbench or the mysql CLI.

The free trial provides full functionality for evaluation: open any MDF file, complete schema browse, full data preview for all tables and rows, all export format options available. Export is limited to the first 50 rows per table. Purchase a full licence ($29) for unlimited row export across all tables.

Still have questions? Contact support or Live Chat

Not ready to convert yet? Start with the free MDF Viewer.

If you just need to browse tables, inspect schema or check record counts before committing to a migration, use the completely free Univik MDF Viewer — no trial limits, no payment required.

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