Choose a MIDI file
Drop a .mid or .midi file from your device. Standard MIDI format 0 and format 1 files are supported up to 2 MiB and 180 seconds.
MAKE A LISTENABLE FILE
MIDI to MP3
Convert MIDI to MP3 or WAV, with instrument sounds rendered right in your browser.
NO ACCOUNT
ON-DEVICE RENDERING
ONE FILE AT A TIME
THE RENDERER
01 / INPUT
Start with a MIDI file
Drop a MIDI file here
or choose one from your device
.MID or .MIDI · Standard MIDI 0 or 1
One file at a time · Up to 2 MiB · Up to 180 seconds
Choose a Standard MIDI file to begin.
The MIDI is rendered on this computer. The first conversion loads instrument sounds; MP3 also loads its encoder.
THE OUTPUT / READY TO HEAR
Listen to the render.
Preview the file here, then save the audio in the format you chose.
AUDIO RESULT—
Format—
MIDI duration—
Tracks—
Notes—
Rendered with sampled General MIDI instruments and drums. MIDI timing, program changes, and pedal events are interpreted by the synth. Audio includes a two-second release tail.
A MIDI file contains note and performance events. This output is a new instrument render, so it is not a copy of any original recording.
THREE CLEAR MOVES
01 / CHOOSE
02 / PICK
03 / LISTEN
How to render MIDI as audio
Pick your output
Choose MP3 at 192 kbps for a compact file, or WAV as 16-bit stereo PCM at 44.1 kHz. The first conversion loads the instrument bank; MP3 also loads its encoder.
Preview and download
Listen to the rendered result, then download it with a safe filename. You can return to the same page and render another file.
FILE SUPPORT
MIDI in. MP3 or WAV out.
This page handles Standard MIDI files with the timing and performance events needed for a musical render. The file must use format 0 or 1; format 2 and SMPTE timing are not accepted.
Complexity limits: 64 tracks, 100,000 notes, and 250,000 events. Very complex files may time out; use a shorter file.
Input
.MID · .MIDI
Format 0 or 1 · max 2 MiB · max 180 seconds
Output
MP3 · 192 kbps
WAV · PCM 16-bit · stereo · 44.1 kHz
GOOD TO KNOW
MIDI to MP3 and WAV FAQ
Which MIDI files can I render?
Choose a Standard MIDI file with .mid or .midi as its extension. Format 0 and format 1 are supported. Format 2 and SMPTE timing are not supported.
Can I use this as a MIDI to WAV converter?
Yes. Choose WAV in the same tool for uncompressed audio, or choose MP3 for a smaller file. MP3 is a 192 kbps compressed audio file. WAV is uncompressed 16-bit stereo PCM at 44.1 kHz. Both are rendered from the same MIDI events.
Does the render include my MIDI instruments?
The renderer uses sampled General MIDI instruments and drums. Program changes and pedal events in the file are interpreted during rendering.
Can I render a MIDI file longer than three minutes?
No. The engine checks the MIDI duration and rejects files longer than 180 seconds so the in-browser render stays bounded.
Is my MIDI uploaded?
No. The file is read and rendered on this device. This page does not require an account and does not send the MIDI to an online service.
What loads on the first conversion?
The browser loads the sampled instrument bank when it is needed. MP3 output also loads its encoder. Those assets are read by this page while your MIDI stays on this device.
Will the audio match a recording exactly?
A MIDI file stores musical events, not a recording. This page creates a new sampled instrument render from those events, so use the preview to decide whether it fits your project.