Files with md5 file extension can be primarily found as so call checksum files, a relatively small data files  which contains only the checksum values of other files. Nothing more, nothing less.

There is one other file type using
the MD5 file extension!

empty icon.md5 - Samsung Galaxy firmware archive

Detailed description

Software that open md5 file

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MD5 file extension - Checksum data

What is md5 file? How to open md5 files?

File type specification:

Various data file type icon Various data file type

The md5 file extension is commonly used for checksum files. The MD5 Message-Digest Algorithm uses a hash function that produces a 128-bit (16-byte) hash value.

This format was used in many programs and is frequently used to check data integrity. It was first designed in 1991 by Ron Rivest.

A typical md5 checksum file is an relatively small file which contains the checksum values of other files. Because the checksum values have fixed length (usually from 16 to 256 bits) the size of checksum file not depend from size of this files, only from their quantity. This allow by small oversizing of summary data let possibility of verifying integrity of data files at any time.

Updated: November 16, 2023

The default software associated to open md5 file:

ExactFile picture or screenshot

ExactFile  Microsoft Windows software

Company or developer:
StudyLamp Software LLC

A file integrity verification tool for Microsoft Windows.

Help how to open:

Some programs can analyze checksum files, but that's about it.

How to convert:

Checksum files cannot be converted to anything else and there is also no reason to do so.

List of recommended software applications associated to the .md5 file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open md5 file, edit md5 file, convert md5 file, view md5 file, play md5 file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with md5 file - Checksum data

Click on the software link for more information about ExactFile. ExactFile uses md5 file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

Main software associated with md5 file by default:
ExactFile
Other suggested software:
RapidCRC small icon RapidCRC
FSUM
ISOBuster small icon ISOBuster
TeraCopy
MD5summer

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