Free online SMF to MID converter
SMF and MID are often the same MIDI data; sometimes only the extension changes.
Convert SMF to MID online - free
Your file is processed instantly and deleted as soon as you download it.
Import a file from a URL
Paste a direct link to the file. We download it to our server and it is converted exactly like an upload.
How it works
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Upload your .smf file
Click to browse to select your file you want to convert or simply drag & drop your file into selected area.
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Perform .smf to .mid conversion
After successful file upload, click to convert when you are ready.
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Download converted .mid file
Conversion result is ready to download.
Conversion statistics: SMF to MID
Updated November 9, 2026, from conversions on 101convert.com
How to convert smf to mid file
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smf to mid file conversion
.smf and .mid usually refer to the same kind of file: a Standard MIDI File. In many cases, there is no real conversion needed at all. If the file already contains standard MIDI data, changing the extension from .smf to .mid may be enough.
Important: some programs use .smf as a custom extension for files that are not standard MIDI files. In that case, renaming the file will not make it playable as MIDI. You first need to confirm that the file is actually a standard MIDI file.
You can test this by opening the file in a MIDI-capable player, editor, or DAW. If it opens correctly, it is likely standard MIDI data and can usually be saved or exported as .mid.
MuseScore is one option for this. Open the file, then use File → Export and choose MIDI to save it as .mid. Depending on the version, you may also be able to use File → Save As or an export dialog that offers MIDI output.
Other tools that can open and save MIDI files include DAWs, MIDI editors, and some audio conversion tools. Examples include Reaper, Cakewalk, FL Studio, and Aria Maestosa, provided they support importing the source file and exporting standard MIDI.
If the file is already valid MIDI, the simplest fix is often just renaming .smf to .mid. If the file is not valid MIDI, you need software that can read its original format and export standard MIDI data.
Tip: If you are unsure, make a copy of the file before renaming it so you can restore the original extension if needed.
SMF vs MID: format comparison
How the SMF and MID formats compare on the properties that matter most for this conversion.
| Property | .SMF Standard MIDI File | .MID MIDI file |
|---|---|---|
| Sheet music notation | No | — |
| Audio playback | Yes | Yes |
| Further editing | Easy | Limited |
| Plain-text readable | No | No |
| Player support | Wide | Wide |
| Typical file size | Very small | Very small |
| Open standard | Yes | Yes |
| Introduced | 1988 | 1983 |
| Developer | MIDI Manufacturers Association | Unknown (originally General MIDI / MIDI Manufacturers Association ecosystem) |
| MIME type | audio/midi | audio/midi |
Information about file extensions and file types is provided by File-Extensions.org
Suggested software and links: smf to mid converters
Frequently asked questions
Is the SMF to MID converter free?
Yes, converting SMF to MID on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.
How large can my SMF file be?
You can upload SMF files up to 10 MB and convert up to 3 files at once in a single batch. With a paid plan the limit is up to 100 MB per file and 100 files at once, see our plans.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert SMF to MID?
No. The SMF to MID conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid SMF file for this SMF to MID conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.