MIDI to MP3 Converter
Turn a .mid file into an MP3 you can play anywhere. Every track is played with its own General MIDI instrument, drums included, right in your browser.
or drop a .mid file here. It stays on your device — nothing is uploaded.
- Free
- No Signup
- Nothing uploaded
- 128 instruments + drums
- MP3 192 kbps or WAV
How to convert MIDI to MP3
- Step 1
Open your MIDI file
Choose a .mid or .midi file, or drop it on the box. It is read by your browser and never leaves your device.
- Step 2
Convert to MP3
Press Convert. The notes are played with the instruments set in the file and recorded to audio — faster than real time on most computers.
- Step 3
Listen and download
Check the result in the audio player, then download the MP3. It plays on any phone, computer or media player.
Why a MIDI file needs converting before it plays everywhere
A MIDI file stores notes, not sound. Phones, media players and most apps cannot play it, because they have no instruments to play the notes with. An MP3 is recorded sound, so it plays anywhere.
Converting MIDI to MP3 means playing every note with an instrument and recording the result. This converter uses a General MIDI sound bank, so a song written for piano, strings, bass and drums comes out with all of them. To just listen to a MIDI file without saving anything, open it in the online MIDI player.
Need the full quality for editing or a video? Choose WAV instead of MP3, or use the MIDI to WAV converter.
More free MIDI tools
MP3 to MIDI Converter
Upload a song or recording as an MP3 and download its notes as an editable MIDI file.
Convert MP3 to MIDI →Audio to MIDI Converter
WAV, M4A, FLAC, OGG and the sound of MP4 or MOV videos, turned into MIDI notes.
Convert audio to MIDI →WAV to MIDI Converter
Lossless WAV and FLAC recordings and DAW stems, for the cleanest notes.
Convert WAV to MIDI →MP4 to MIDI Converter
Upload an MP4 or MOV video and get the notes in its sound track as MIDI.
Convert MP4 to MIDI →Piano to MIDI Converter
Solo piano recordings to MIDI, with chords and both hands as separate notes.
Convert piano audio to MIDI →Voice to MIDI Converter
Sing, hum or whistle a melody into your microphone and get it back as MIDI.
Convert your voice to MIDI →Online MIDI Player
Open a .mid file and hear it on a piano roll in your browser — nothing is uploaded.
Play a MIDI file online →MIDI to WAV Converter
Render a .mid file to a lossless WAV for your DAW or a video, without uploading it.
Convert MIDI to WAV →Frequently asked questions
What quality is the MP3?
Stereo, 44.1 kHz, 192 kbps — good for listening and sharing. A 3-minute song is about 4 MB. For lossless audio, switch to WAV before converting.
Can I convert a MID file to MP3 on my phone?
Yes, in a current mobile browser. Short songs work best on phones; very long or dense MIDI files take more time and memory than on a computer.
Is my MIDI file uploaded?
No. The MIDI file is played and recorded inside your browser, and the audio file is made on your device. Nothing is sent to our server, so there is no daily limit.
Which instruments does it use?
The 128 instruments and the drum kits of General MIDI, from the GeneralUser GS sound bank. Each track plays with the instrument chosen in the MIDI file — piano, strings, guitar, bass, drums and so on.
Why does it sound different from my DAW?
A MIDI file holds notes, not sound, so every player picks its own instruments. Your DAW may use other sample libraries or plugins; to get exactly that sound, export the audio from the DAW itself.
How long can the MIDI file be?
Up to 10 minutes of music and 2 MB. The first conversion downloads the instruments (about 8 MB); after that they come from your browser cache.
Can I turn an MP3 back into MIDI?
Yes — that is the other direction. Use the MP3 to MIDI converter to get the notes of a recording as an editable MIDI file.
Instruments: the GeneralUser GS sound bank by S. Christian Collins, played with SpessaSynth.