M File Extensions

File types with extensions that start with the letter M.

Extension	File Type	File Description
.m	Data	Mathematica Input File
.m	Developer	Objective-C Implementation File
.m1a	Audio	MPEG-1 Audio File
.m1pg	Video	iFinish Video Clip
.m1v	Video	MPEG-1 Video File
.m2	Game	World or Warcraft Model Object
.m21	Video	MPEG-21 File
.m21	Video	AXMEDIS MPEG-21 File
.m2a	Video	MPEG-1 Layer 2 Audio File
.m2p	Plugin	Maxthon 2 Browser Plugin File
.m2s	Settings	Maxthon 2 Browser Skin File
.m2t	Video	HDV Video File
.m2ts	Video	Blu-ray BDAV Video File
.m2v	Video	MPEG-2 Video
.m3d	3D Image	3D Model File
.m3d	3D Image	DIALux 3D Object File
.m3g	Executable	Mobile 3D Graphics Program
.m3u	Audio	Media Playlist File
.m4	Developer	Macro Processor Library
.m4a	Audio	Apple Lossless Audio File
.m4b	Audio	MPEG-4 Audio Book File
.m4e	Video	MPEG-4 Video File
.m4p	Audio	iTunes Music Store Audio File
.m4r	Audio	iPhone Ringtone File
.m4u	Video	MPEG-4 Playlist
.m4v	Video	iTunes Video File
.ma	3D Image	Maya Project File
.ma1	Audio	Monarch Audio File
.mab	Misc	Mozilla Address Book
.mac	Raster Image	MacPaint Image
.mad	Misc	Access Module
.maf	Misc	Microsoft Access Form
.mag	Image	Access Diagram
.mag	Data	Magic Circuit Layout
.magik	Developer	Magik Source Code File
.mai	Data	Microsoft Mail File
.mailhost	Settings	MSN Mailhost Settings File
.mak	Developer	Makefile
.mam	Misc	Microsoft Access Macro
.man	Text	Unix Manual
.manifest	System	Windows Visual Styles File
.map	Data	Weather Defender Map
.map	Web	Image Map
.map	Game	Half-Life Map File
.mapimail	System	Send To Mail Recipient
.maq	Misc	Microsoft Access Query
.mar	Misc	Microsoft Access Report
.mas	Misc	Access Stored Procedures
.masseffectprofile	Data	Mass Effect Player Profile
.masseffectsave	Game	Mass Effect Saved Game
.master	Web	ASP.NET Master Page
.mat	Data	MATLAB MAT-File
.mat	Misc	Microsoft Access Table Shortcut File
.mat	Raster Image	Vue Material File
.mat	Plugin	V-Ray Materials File
.material	Settings	Rigs of Rods Texture Reference File
.mato	Game	Atomic Combat Saved Game
.mau	Misc	Media Attachment Unit
.mav	Misc	Access View File
.maw	Misc	Access Data Access Page
.max	Page Layout	OmniPage Scanned Document
.max	3D Image	3ds Max Scene File
.max	Game	Action Replay Max Save File
.max	Raster Image	PaperPort Scanned Document
.mb	3D Image	Maya Binary Project File
.mbb	Data	ManaBook Book File
.mbbk	Page Layout	ManaBook Book Kit File
.mbf	Data	Microsoft Money Backup File
.mbg	Data	Microsoft Mailbag
.mbg	Data	Mailbag Assistant Mailbox File
.mbi	Disk	Multi-Bootable Information File
.mbl	Data	Logger Pro Data File
.mbm	Raster Image	Multi Bitmap File
.mbox	Text	E-mail Mailbox File
.mbp	Data	Mobipocket Notes File
.mbx	Data	Outlook Express Mailbox
.mc1	Data	MedCalc Data File
.mc5	3D Image	Poser 5 Material File
.mc6	3D Image	Poser 6 Material File
.mc9	Data	Mastercam 9 Geometry File
.mcd	Data	Mathcad Document
.mcf	Font	Watchtower Library Font File
.mcfi	Misc	Maya Initial Fluid Cache File
.mcfp	Misc	Maya Fluid Cache Playback File
.mci	Misc	Media Control Interface
.mcl	Settings	Windows Media Center Link File
.mco	Misc	Live Messenger Winks File
.mcr	Executable	3ds Max Macroscript File
.mcrp	Encoded	MobyExplorer Encrypted File
.mcs	Image	Mathcad Image
.mcx	3D Image	MICRO CADAM-X/6000 Model Data File
.mcz	3D Image	Compressed Poser Material File
.md	Data	Moneydance Financial Data File
.md	Developer	Machine Description File
.md	Compressed	MDCD Compressed Archive
.md0	Disk	Alcohol Disk Image Segment 1
.md1	Disk	GEAR CD/DVD Disc Image
.md1	Disk	Alcohol Disk Image Segment 2
.md2	Disk	Alcohol Disk Image Segment 2
.md2	Game	Quake 2 Player Model
.md3	Game	Quake III 3D Model
.md5	Misc	MD5 Checksum File
.mda	Plugin	Access Add-in
.mdb	Data	Microsoft Access Database
.mdc	Data	Multi Dimension Cube File
.mde	Misc	ArchiCAD Educational Version Module File
.mde	Plugin	Access Add-in (Compiled)
.mdf	Data	Measurement Data Format File
.mdf	Disk	Media Disc Image File
.mdf	Misc	Translation Memory Data Find File
.mdf	Data	SQL Server Database File
.mdi	Page Layout	Microsoft Document Imaging File
.mdl	Audio	DigiTrakker Module
.mdl	Game	Half-Life Model File
.mdl	3D Image	Warcraft III 3D Model Text File
.mdl	Data	Simulink Model File
.mdl	Misc	Flight Simulator Airplane Model
.mdl	Data	Rational Rose Model File
.mdm	Data	HLM Multivariate Data Matrix File
.mdm	Game	Mario Dash Map File
.mdmp	System	Windows Minidump
.mdn	Data	Blank Access Database Template
.mds	Disk	Alcohol Disc Image Track Data
.mds	Disk	Media Descriptor File
.mdt	Data	Access Database Template
.mdw	Misc	Access Workgroup File
.mdx	Data	Rational XDE Model File
.mdx	Data	Multiple Index File
.mdx	3D Image	Warcraft III Model File
.mdz	Data	Access Wizard Template
.me	Text	Readme Text File
.me2mod	Game	Mass Effect 2 Modification File
.meb	3D Image	PRO100 3D Interior Catalog Element
.med	Developer	RSView Development Project
.med	Audio	Amiga MED Sound File
.mel	Executable	Maya Embedded Language File
.mell	Text	Mellel Word Processing File
.mellel	Text	Mellel Word Processing Document
.mem	Backup	FoxPro Variable File
.mem	Data	Mnemosyne Card Collection
.mem	Game	Virtual Game Station Memory File
.mem	Executable	Macro Editor Macro
.menc	Data	Windows Mobile Encrypted File
.mer	Developer	RSView Development Runtime File
.mesh	3D Image	3D Mesh Model
.met	Data	eMule Resource File
.meta	Video	RealPlayer Metafile
.metadata_never_index	System	Spotlight Never Index File
.mex	Data	Macro Express File
.mf	Developer	Java Manifest File
.mfa	Developer	Multimedia Fusion Development File
.mfo	Page Layout	MediaFace Online Saved File
.mfo	Data	Perl ModInfo Descriptor File
.mfp	Data	Macromedia FlashPaper Document
.mfp	Page Layout	MediaFACE Project File
.mfs	Encoded	MetFS Encrypted File System
.mft	Page Layout	MediaFACE Project Template
.mfx	Plugin	Multimedia Fusion Extension
.mgc	Data	MGCSoft Equation Illustrator File
.mgf	Image	Materials and Geometry Format
.mgl	Game	Age of Empires 2 Replay File
.mgm	Settings	MGCSoft Equation Illustrator Macro
.mgs	Image	MGCSoft Vector Shapes
.mgv	Audio	Yamaha MegaVoice File
.mgv	Video	PSP Video File
.mgx	Game	Rise of Nations Saved Game
.mgx	Game	Age of Empires 2 Expansion Replay File
.mhs	Misc	Hardware Specification File
.mht	Web	MHTML Web Archive
.mhtml	Web	MIME HTML File
.mi4	System	Audio Player Firmware File
.mic	Image	Image Composer File
.mid	Audio	MIDI File
.midi	Audio	MIDI File
.mif	Misc	Management Information Format
.mig	Backup	Windows Migration Backup File
.milk	Plugin	MilkDrop Winamp Plugin Preset
.mim	Encoded	Multi-Purpose Internet Mail Message File
.mime	Encoded	Multi-Purpose Internet Mail Extension
.miniusf	Audio	Nintendo 64 Song File
.mint	Compressed	Linux Mint Installer File
.mip	Image	Multiple Image Print File
.mis	Game	Saved Game Mission File
.mis	Game	Marble Blast Gold Mission File
.mix	Image	PhotoDraw Image File
.mix	Raster Image	Picture It! Image File
.mix	Game	Command & Conquer Data File
.mj2	Video	Motion JPEG 2000 Video Clip
.mjp	Video	MJPEG Video File
.mjpg	Video	Motion JPEG Video File
.mk	Developer	Makefile
.mka	Audio	Matroska Audio File
.mkv	Video	Matroska Video File
.mlb	Developer	Visual FoxPro Library
.mlk	Settings	Mastercook Look File
.mlp	Audio	Meridian Lossless Packing Audio File
.mls	Data	Milestones Simplicity File
.mls	Misc	CrystalPlayer Playlist
.mm	Data	FreeMind Mind Map
.mm6	Game	Might and Magic 6 Saved Game
.mm7	Game	Might and Magic 7 Saved Game
.mm8	Game	Might and Magic 8 Saved Game
.mma	Image	Master Album Maker Digital Photo Album
.mmap	Data	MindManager Map File
.mmc	Data	Microsoft Media Catalog
.mme	Encoded	Multi-Purpose Internet Mail
.mmf	Data	Microsoft Message File
.mmf	Audio	Synthetic Music Mobile Application File
.mml	Page Layout	FrameMaker Maker Markup Language File
.mmm	Audio	MAGIX Music Maker File
.mmo	Misc	Memory Map Overlay File
.mmp	Misc	MixMeister Playlist
.mmp	Data	Master Album Maker Project
.mmp	Data	MindManager Mind Map
.mmv	Video	MicroMV Video File
.mnc	Data	My Notes Center Notebook
.mng	Raster Image	Multiple Network Graphic
.mng	Data	Yamaha PSR Disk Manager File
.mnk	Data	My Notes Keeper Notebook
.mnm	3D Image	Character Studio Marker Name File
.mno	Data	Macromedia Design Note
.mnt	Text	FoxPro Menu Memo
.mnv	Video	PlayStation Movie File
.mnx	Misc	FoxPro Menu
.mny	Data	Microsoft Money File
.mo	Developer	Machine Object File
.mo3	Audio	MO3 Audio File
.mobi	Data	Mobipocket eBook
.mod	Audio	Amiga Music Module File
.mod	Developer	Fortran Module File
.mod	Video	JVC Recorded Video File
.mod	Game	Neverwinter Nights Module
.mod	Misc	ArchiCAD Module
.modd	Video	Sony Video Analysis File
.model	3D Image	CATIA 3D Model FIle
.mof	Settings	Managed Object Format File
.moff	Video	Sony Video Analysis Index File
.moho	Data	Anime Studio Animation Project
.moi	Video	MOI Video File
.mom	Developer	Managed Object Model
.moov	Video	Apple QuickTime Movie
.mosaic	Data	MacOSaiX Mosaic File
.mou	Compressed	WinMount Compressed File
.mov	Video	Apple QuickTime Movie
.movie	Video	QuickTime Movie File
.mox	Data	ExtendSim Simulation Software Model
.moz	Web	Mozilla Cache File
.mp	3D Image	Maya PLE Project File
.mp1	Audio	MPEG-1 Layer 1 Audio File
.mp2	Audio	MPEG Layer II Compressed Audio File
.mp21	Video	AXMEDIS MPEG-21 Object
.mp21	Video	MPEG-21 Multimedia File
.mp2m	Game	Max Payne 2 Mod File
.mp2s	Game	Max Payne 2 Saved Game
.mp2v	Video	MPEG-2 Video File
.mp3	Audio	MP3 Audio File
.mp4	Video	MPEG-4 Video File
.mp4v	Video	MPEG-4 Video
.mpa	Audio	MPEG-2 Audio File
.mpb	Backup	MyPhoneExplorer Backup File
.mpc	Audio	Musepack Compressed Audio File
.mpcpl	Misc	Media Player Classic Playlist
.mpd	Data	File List Creator Playlist
.mpd	Data	Microsoft Project Database
.mpdconf	Settings	Music Player Daemon File
.mpe	Video	MPEG Movie File
.mpeg	Video	MPEG Movie
.mpeg4	Video	MPEG-4 File
.mpf	Video	MainActor Project File
.mpf	Raster Image	Microsoft Media Package FIle
.mpg	Video	MPEG Video File
.mpg2	Video	MPEG-2 Video File
.mpga	Audio	MPEG-1 Layer 3 Audio File
.mpj	Data	Minitab Project File
.mpk	Game	Project64 Memory Pack File
.mpkg	Compressed	Meta Package File
.mpls	Video	Blu-ray Movie Playlist File
.mpm	Game	Max Payne Modfication File
.mpp	Data	Microsoft Project File
.mpq	Game	Blizzard Mo'PaQ File
.mpr	Developer	FoxPro Generated Menu Program
.mps	Misc	Pocket Streets Map File
.mps	Game	Max Payne Saved Game
.mpt	Data	Microsoft Project Template
.mpu	Audio	MPEG Layer 3 Audio File
.mpv	Video	MPEG Elementary Stream Video File
.mpv2	Video	MPEG-2 Video Stream
.mpx	Data	Microsoft Project Exchange File
.mpx	Executable	FoxPro Compiled Menu Program
.mpz	Data	Miradi Project File
.mp_	Audio	Mobile Phone Sound File
.mq4	Data	MetaTrader Custom Indicator
.mqv	Video	Sony Movie Format File
.mrb	Image	Multiple Resolution Bitmap
.mrc	Executable	mIRC Script File
.mrk	Misc	DPOF Auto Print Order File
.mrs	Game	GunZ Game Data File
.mrw	Raster Image	Minolta Raw Image File
.ms	Executable	3ds Max Script File
.ms-tnef	Misc	MS Transport Neutral Encapsulation Format
.ms10	Data	Multisim Circuit Design
.ms3d	3D Image	MilkShape 3D Model
.msc	System	Microsoft Management Console Snap-in Control File
.msdvd	Video	Windows DVD Maker Project File
.mse	Encoded	3ds Max Encrypted MAXScript File
.msf	Misc	Mail Summary File
.msf	Settings	Miranda IM Skin File
.msg	Text	Outlook Mail Message
.msh	Video	Visual Communicator Project File
.msi	Misc	Windows Installer Package
.msk	Image	Paint Shop Pro Mask
.mskn	Settings	MediaMonkey Skin File
.msm	Settings	Windows Installer Merge Module
.msn	Settings	Host Blocking File
.mso	Misc	Inline E-mail Attachment
.mso	Misc	Microsoft Office Macro Reference File
.msp	Image	Microsoft Paint Bitmap Image
.msp	System	Windows Installer Patch
.mspx	Web	Microsoft ASP.NET Web Page
.mss	Misc	Software Specification File
.msstyle	System	Windows XP Unsigned Style
.msstyles	System	Windows XP Style
.mst	Executable	Windows SDK Setup Transform Script
.mst	Settings	Corel Presentations Master Template File
.msu	Misc	Windows Vista Update Package
.msv	Audio	Memory Stick Voice File
.mswmm	Video	Windows Movie Maker Project
.mt2	Audio	MadTracker 2 Module
.mtd	Misc	Musicnotes Digital Sheet Music File
.mte	Audio	MadTracker 2 Envelope
.mtf	Misc	Translation Memory Translations File
.mtf	Misc	MasterCook Tips
.mtf	Settings	Motorola Theme File
.mth	Data	Derive Math File
.mti	Audio	MadTracker Instrument
.mtm	Audio	MultiTracker Module
.mtp	Audio	MadTracker 2 Pattern
.mts	Audio	MadTracker 2 Sample File
.mts	Video	AVCHD Video File
.mtv	Video	MTV Video Format File
.mtw	Data	Minitab Worksheet File
.mtx	Plugin	MadTracker 2 Extension
.mtx	3D Image	MetaStream Scene File
.mtz	3D Image	Compressed MetaStream Scene File
.mud	Data	Textease Multi User Database
.muf	Data	Alpha Five Licence File
.mui	System	MultiLanguage Resource File
.mum	System	Windows Vista Update Package
.mus	Game	Playstation 2 Music File
.mus	Audio	Finale Notation File Format
.mvb	Video	Multimedia Viewer Book Source File
.mvc	Video	Movie Collector Catalog
.mvd	Video	Movie Edit Pro Video Project
.mvi	Misc	AutoCAD Movie Command File
.mvs	Misc	Project Language and Simulation File
.mvx	Developer	Multimedia Fusion Movement Extension
.mw	Text	MacWrite Text Document
.mw	Data	Maple Worksheet
.mwd	Text	MarinerWrite Document
.mwf	Data	MapGuide Author Map Window File
.mwf	Misc	Translation Memory Word Find File
.mwp	Text	Lotus Word Pro SmartMaster File
.mws	Data	Maple Classic Worksheet
.mws	Audio	MWave DSP Synth Instrument Extract
.mwx	Settings	MapGuide Author Map Window XML File
.mwx	Data	MicroWorlds EX File
.mxd	Data	ArcGIS Map Document
.mxe	Executable	Macro Express Playable Macro
.mxf	Video	Material Exchange Format File
.mxml	Developer	Flex MXML Component
.mxp	Plugin	Macromedia Extension
.myapp	Developer	Visual Studio Application XML File
.myd	Data	MySQL Database Data File
.mydocs	System	Send To My Documents
.myi	Data	MySQL MyISAM Index File
.mzp	Compressed	MAXScript Zip Package
.mzp	Audio	Mozart Percussion File