Opening an MCIF File

The MCIF file type is primarily associated with MacroMolecular Crystallographic Information File.

MCIF	File extension: MCIF
	File type:	MacroMolecular Crystallographic Information files

What is an MCIF file?

MCIF files mostly belong to MacroMolecular Crystallographic Information File. Use our "Online MCIF Text Viewer" below to analyze your MCIF file and to see all text it contains.

How to open MCIF files

You need a suitable software like MacroMolecular Crystallographic Information File to open an MCIF file. You need a suitable software like MacroMolecular Crystallographic Information File to open an MCIF file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your MCIF file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MCIF file directly in the browser:. Just drag the file onto this browser window and drop it.

Online MCIF Text Viewer

Choose your .mcif file to analyze

or drag and drop it here

Online File Viewer

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.MCIF File Won't Open? Here is What You Can Do

Because .MCIF files can originate from various specialized programs, they aren't universally openable by standard software.

Identify the Source: If received from a structural biologist or the Protein Data Bank, it is likely a MacroMolecular Crystallographic Information File.
Check the Header: Open the file in a text editor to inspect the opening lines.
- Plain text starting with data_ confirms a standard crystallographic file.
- Unreadable symbols or "PK" suggest a compressed or alternative format.
Use the Original Software: The original program is usually required; try PyMOL, UCSF Chimera, or Jmol, or ask the sender if uncertain.
Use this Webpage: Drag and drop your file onto this page to detect the format, extract readable metadata, and preview contents.

Technical Data for MCIF File Extension

Related files:

cif, 1st

Mime type:

chemical/x-mmcif

an mcif MacroMolecular Crystallographic Information file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with MCIF files

Associate the MCIF file extension with the correct application.
Update your software that should actually open MacroMolecular Crystallographic Information files. Because only the current version supports the latest MCIF file format. Search, therefore, e.g. on the manufacturer website after an available MacroMolecular Crystallographic Information File update.
To make sure that your MCIF file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .MCIF file online - secure, fast, and no downloads needed.