MRC Converter

Convert machine-readable catalog files (MRC) online for free


Drop or upload your .MRC file
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How to convert your MRC file

  1. Click the "Select File" button above, and choose your MRC file.
  2. You'll see a preview.
  3. Click the "Convert file to..." button to save your file in the format you want.

Convert MRC to another file type

The converter easily converts your MRC catalog files to various formats - free and online. No MarcEdit or or other Database software needed.

  • MRC to PDF
  • MRC to TIFF
  • MRC to PNG
  • MRC to PI3
  • MRC to HDR
  • MRC to BPX
  • MRC to PM
  • MRC to ICO
  • MRC to PCX
  • MRC to PRN
  • MRC to RLE
  • MRC to PS2

Convert a file to MRC

To convert other file formats to the "MARC 21 Record File" file type, you need software like MarcEdit or a similar tool.


About MRC files

The .MRC file is a binary data format primarily used for Machine-Readable Cataloging (MARC 21) records. Originally developed by the Library of Congress in the 1960s, these files store bibliographic information for library catalogs. A smaller percentage of .MRC files are used as Medical Research Council electron microscopy images (handled by IMOD), mIRC script files, or compressed theme packages for Xiaomi Android devices.

Working with cataloging .MRC files is highly frustrating for modern users. It is a legacy binary format that looks like gibberish if opened in standard text editors. It requires specialized, niche software like MarcEdit or dedicated Integrated Library Systems (ILS) to view or edit. It lacks native integration with modern web databases, making data extraction tedious and time-consuming.

To make this data usable outside of library environments, conversion is mandatory. For web database integration and API use, convert to XML (MARCXML). For data analysis in spreadsheet software like Microsoft Excel, convert to CSV. For plain text reading or manual editing, convert to TXT or MRK (mnemonic MARC format). Note that converting to plain text strips the binary directory structure, meaning you must convert it back to .MRC if a library system needs to ingest it again.

Drag and drop your file to analyze and convert it - free, online, and without installing software.

Use Convert.Guru to open and convert your MRC file.

Users also converted XML, MCR, ERG, MRCX, MRM, MRC2, MARK, JPG, MRK, PDF, ZIP, ZWO and PNG files.


FAQ

If you want to convert MRC file to FIT, MTZ, EXE, MSI, APP, DMG, DEB, RPM or PKG, you can use MarcEdit or similar software from the "Library Cataloging Data Storage" category. In the File menu, look for Save As… or Export….

To convert JAR, APP, SCR, IPA, COM, AAB, PS1, DMG, VBS, EXE, XAPK or MSI files to MRC, try MarcEdit or another comparable tool in the "Library Cataloging Data Storage" category.



The MRC 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 MRC converter.