MID

mid icon

MIDI audio

File type: Mobile ringtone file, Audio and sound file

Files with mid extension can be found as common MIDI files. Also uses MIDI extension. It is one of the most basic sound files, used a lot in the past.

Found 2 different file type records with the same mid filename suffix.

What is mid file?

File type category:
Mobile ringtone file
Audio and sound file

Date updated: July 13, 2025

File extension mid is commonly used for MIDI audio files. Musical Instrument Digital Interface (MIDI) is a standard protocol for the interchange of musical information between musical instruments, synthesizers, and computers.

This standard defines the codes for a musical event that include the start of a note, its pitch, length, volume, and musical attributes, such as vibrato. It also defines codes for various button, dial, and pedal adjustments that are used on synthesizers.

MIME types:
audio/mid
audio/midi
audio/x-mid
audio/x-midi
music/crescendo
x-music/x-midi

How to open mid file?

MIDI formats are well supported, plenty of audio editors, players and other software supports it.

How to convert mid file?

MIDI files can be processed by musical software and an audio file can be generated from them. They may also be turned into music sheets and tablatures.

Technical details

MIME types
  • audio/midi
  • audio/x-midi
File signature
HEX 4D 54 68 64
ASCII MThd

Suggested software to open mid file:

Associated software actions with the mid file

Software applications that can open mid files:

Software applications that can edit mid files:

Software capable of saving mid files:

Software apps that create mid files:

Microsoft Windows

Software apps that record to mid files:

Microsoft Windows

no icon available Personal Composer

Software apps that convert mid files:

Software apps that import mid files:

MapInfo interchange format file

File type category:
GIS, GPS navigation and map file

Date updated: November 5, 2026

MapInfo Interchange Format is associated with MapInfo GIS software, originally developed by MapInfo Corporation and later owned by Pitney Bowes; the software is now developed by Precisely. A .mid file contains the non-geometric, tabular information associated with map features, such as their attribute values.

The .mid file is normally part of a pair with a .mif file. The matching MIF file describes the dataset and contains the feature geometry, while the MID file supplies the corresponding records. Both files are needed to reproduce the complete dataset in MapInfo or another application that supports this interchange format.

How to open mid file?

Open the .mid file in MapInfo on Microsoft Windows, normally by opening or importing the matching .mif file in the same folder. Keep both files together and retain their matching base name.

A MID file opened by itself may not display a map because it contains attribute records rather than the dataset's geometry.

How to convert mid file?

The format can be converted as part of a complete MIF/MID dataset. In MapInfo, import the matching files and export the resulting layer to another GIS format. Other GIS applications and online conversion services that support MapInfo Interchange Format may provide similar import and export options.

Because the .mid file contains only the attribute portion of the dataset, convert it together with its matching .mif file rather than as an independent file.

Suggested software to open mid file:

Associated software actions with the mid file

Software applications that can open mid files:

Microsoft Windows

Software applications that can edit mid files:

Microsoft Windows

Software capable of saving mid files:

Microsoft Windows

Programs for viewing mid files:

Microsoft Windows

Apps designed for playing mid files:

Microsoft Windows

Software apps that convert mid files:

On-line services

Software apps that export mid files:

Microsoft Windows

Convert .mid files

online = can be converted online at 101convert.com

Online conversions and file conversion information are provided by 101convert.com.

Related file extensions