All about M3 Files

The M3 file type is primarily associated with WarCraft.

M3	File extension: M3
	File type:	3D game character model

What is an M3 file?

M3 files mostly belong to WarCraft by Blizzard. Files with M3 file extension are made up of 3D models used in game units of several video game files. For example, the MPQ game archive that ships with StarCraft II contains M3 files. Such M3 files contain 3D models of characters from the Terran, Zerg, and Protoss races. M3 files use Blizzard's MDX3 format which replaced the MDX format. An older use case of M3 files can be found in Modula-3 source code files, an obsolete programming language that was developed to replace Modula-2.

How can I open an M3 file?

You need a suitable software like WarCraft to open an M3 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 M3 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a M3 file directly in the browser:. Just drag the file onto this browser window and drop it.

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Programs that open and convert M3 files:

WarCraft by Blizzard
See the previous paragraphs to learn more about the main application. M3 files are often referred to as WarCraft 3d images because this type of file is primarily created or used by this software.
3DS MAX (3D game character model) by Autodesk
3DS MAX is a multi-platform software developed by Autodesk and used for the creation and rendering of 3D scenes, animations, and game character models. When installed, the M3 plugin offers users the flexibility of rendering/modifying M3 files in 3DS MAX. This file format is classified as 3D Image.
Modula-3 (program source code) by Modula-3
Modula-3 is a modular, imperative, concurrent, and procedural programing language developed to replace Modula-2. The language uses syntax rules similar to those found in the C family of programming languages and Python. Source codes of a program written in Modular-3 are stored in M3 files. This file format is classified as Developer.

M3 file format:

If you can determine the file format, the associated program can also be determined. A file format is determined by the file extension and signature, so JPEG images have the extension .jpg and the first bytes in the file are ÿØÿ. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our evaluation of the M3 files looks like this:

M3 is not a common file extension and includes different formats for different programs. The file formats most commonly found in M3 files are:

65% of all M3 files start with the bytes 43DM crucial for this file format. They consist of unreadable binary data. M3 files can be up to 2 MB in size, but are often around 20 KB - 820 KB. It is a modern file type. Such files are related to storm, base, hero, marine, deathwing and mount.
7% of all M3 files use the same file format, which can be identified by the letters ",,," at the beginning. These are binary files, so they do not contain words or text. Most of these files are 220 bytes to 1 KB in size. AMS00001.M3 is a typical file name.

The remaining 28% of all M3 files are different files with different signatures. These files are often connected to adventerprisek, vios or vmdk. If you want to find out what your M3 file contains, drag and drop it onto this page.

Technical Data for M3 File Extension

File classification:

3D Image

Related files:

m3a, pi, zip, m3u8, mp3, mpq, blp, wdb, m2

Mime type:

text/x-modula, application/octet-stream

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: M3Animation.Document

ProgramID: ZAMailSafe
EXEFile: %ProgramFiles%\Zone Labs\ZoneAlarm\zlclient.exe -warning %1

ProgramID: M3Animation.Document
EXEFile: %ProgramFiles%\AIST\MOVIED~1.0\MovieDV.exe %1

ProgramID: M3Animation.Document
EXEFile: %ProgramFiles%\AIST\MOVIEX~1.0\MOVIEX~1.EXE %1

ProgramID: EMBIRD.File.m3
EXEFile: %ProgramFiles%\EMBIRD32\EMBIRD.EXE

Show all 5 listings To Top

an m3 3D game character model is a special file format by Blizzard and should only be edited and saved with the appropriate software.

How to solve problems with M3 files

Associate the M3 file extension with the correct application.
Update your software that should actually open 3d game character models. Because only the current version supports the latest M3 file format. Search, therefore, e.g. on the Blizzard manufacturer website after an available WarCraft update.
To make sure that your M3 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .M3 file online - secure, fast, and no downloads needed.