MMF Converter

  1. Add your file.

  2. Choose the output format.

  3. Click Convert.

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Convert MMF files online for free

This freeware MMF file converter allows you to convert your ringtone or any other media into different formats. To convert MMF files, add them to the program and start the process. If you want an app with a wider array of options, download the trial desktop version of this online MMF converter for free on Mac or Windows.

What is MMF?

Full name

Synthetic Music Mobile Application Format

Format type


Developed by



MMF stands for Mobile Music Format. MMF files on a cell phone usually contain ringtones and system sounds. We’ve provided specifications for the MXF file type below. We also give a list of programs that play such audio files.

File extension


Technical details

Files in the MMF format contain synthetic sound created with Yamaha SMAF Tools but can also include graphics and text. In MMF files, three types of sound are used: FM synthesis, wavetable synthesis, and stream PCM. Below, we’ve listed some of the programs that support playback of MMF files. Refer to this list if you’re not sure how to open these audio files.

Associated programs

Yamaha MidRadio Player and Yamaha Mobile Contents Player

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