MIDI → M4R Converter

Convert MIDI to M4R - Make a MIDI Ring on an iPhone

Render the score to ringtone audio, then load it with Finder or GarageBand.

M4R Converter

Secure

Drop files to convert

Drag files here or pick them from your device

Expert Tips

What the pros know

Pro Tip

Pick the most recognizable 20 to 30 seconds of the piece before you convert. A phone rarely rings for more than a few seconds, so lead with the hook, not the intro.

Common Mistake

Dropping the M4R into the iPhone's Files app and waiting for it to appear as a ringtone. iOS only registers ringtones through Finder, iTunes, or GarageBand; sitting in storage doesn't count.

Best For

Ringtones nobody else has: your own compositions, video game themes saved as MIDI, or a melody no stock ringtone library carries.

Not Recommended

M4R for an Android phone. Android takes ordinary MP3s as ringtones, so convert the MIDI to MP3 and set it straight from the sound settings.

FAQ

Frequently Asked Questions

Either connect the phone to a computer and drag the file onto it in Finder (or iTunes on Windows), or import the audio into GarageBand on the phone and share it as a ringtone. It then appears in Settings under Sounds & Haptics.

Length is the usual culprit. iOS silently ignores ringtones over 40 seconds. Trim the audio, or shorten the MIDI and convert again.

Renders are normalized by default, raised so the peak sits just under the maximum the format allows. That's as loud as the file can be made without distortion.

The notes and timing will match. The voices come from FluidSynth's FluidR3 General MIDI soundfont, so the instruments will differ from whatever synthesizer your software uses.

There's no need. Android accepts MP3 as a ringtone directly, so convert the MIDI to MP3 and set it from the sound settings.

Yes. No charge, no account, and batch conversion works if you're making several tones.

From Note Data to a Ringing iPhone

An iPhone won't take a .mid as a ringtone. It wants M4R, which is AAC audio wearing a ringtone extension. This page handles the audio half: FluidSynth performs your file with the FluidR3 General MIDI soundfont on our servers, and you download the result as an M4R. Getting it onto the phone is a second step, covered below, because Apple doesn't let a downloaded file become a ringtone directly.

How to Make the Ringtone File

Upload your .mid or .midi file.
Choose M4R as the target.
Download the M4R when the conversion finishes.

Mind the 40-Second Rule

iOS ignores ringtones longer than 40 seconds: they sync without complaint and then never appear in the sound list. If your MIDI runs long, shorten it in a MIDI editor before converting. Loudness matters here too, since a ringtone has to cut through a noisy room. Every render is normalized by default, raised until its peak sits at -1 dBFS, about as loud as the file can go without distorting.

The Two Ways Onto the Phone

With a computer: plug the iPhone in, open Finder (or iTunes on Windows), and drag the M4R onto the device. It appears in Settings under Sounds & Haptics.
Without one: import the audio into GarageBand on the phone, then share the project as a ringtone. GarageBand registers it with iOS for you.

Want the tune as a normal track instead of a ringtone? MIDI to M4A produces the same audio without the ringtone packaging.

Reviewed by ChangeMyFile Team · Last reviewed: April 2026

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