This free MMF Converter will help you to convert .mmf files to MP3, M4A, WAV, OGG, FLAC, WMA, AAC, M4R, AIFF, OPUS formats
Choose your desired output format and start converting MMF files instantly
Convert between all popular audio formats with ease. Our converter supports lossless, lossy, and specialized audio formats.
Select an audio file from your device or drag and drop it into the browser window
Specify the desired format and quality settings for conversion
Click the convert button and wait for the processing to complete
Download the ready file in the selected format to your device
MMF is the common file extension for SMAF (Synthetic music Mobile Application Format), a Yamaha‑specified format used mainly for ringtones and simple audio content on older mobile phones and portable devices.
Unlike standard audio formats that store full waveforms, many SMAF/MMF files contain sequence‑style data similar to MIDI combined with PCM or ADPCM samples, allowing complex sounds with small file sizes.