Convert to MMF

    Upload any audio file and convert it to MMF format instantly using FFmpeg.

    All processing happens locally in your browser. No files uploaded to servers.

    Or you can just drag and drop
    files and folders

    Ready to convert to MMF

    Upload a video/audio file on the left to start converting, or click above to change format

    About MMF

    MMF is an older Yamaha SMAF audio format best known from early mobile phone ringtones. You’d use it only if a specific device or app asks for .mmf files.

    • •Works mainly on older phones and certain devices that expect ringtone files in .mmf.
    • •Makes very small files, good for short tones, alerts, and simple sounds.
    • •Limited support today: most apps, websites, and browsers won’t play it.
    • •Easy to convert: change MP3 or WAV into MMF when a device needs it, or convert MMF back to MP3/WAV to play anywhere.
    • •Not ideal for everyday music listening—choose MP3 or M4A for better compatibility and sound quality.

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