174 · Audio Tools

Audio Format Converter

Change any audio file to the format you need. You can even pull the sound out of a video.

or drop them here (videos work too) Files stay on your device

    How to use the audio format converter

    1. Choose or drop audio (or video) files.
    2. Pick the format and bitrate.
    3. Select Convert and download.

    Which format?

    • MP3: plays everywhere; 192 kbps is a good default.
    • M4A (AAC): Apple devices; slightly better quality than MP3 at the same size.
    • Opus: the most efficient; great for voice at 64–96 kbps.
    • OGG: open format used by games and Linux apps.
    • WAV and FLAC: no quality loss; FLAC is about half the size of WAV.

    Converting a lossy file (like MP3) to a lossless one (like FLAC) doesn’t bring back lost quality.

    Examples

    iPhone voice memo .m4a → MP3 192 kbps

    MP3 that plays on any device

    Podcast WAV (300 MB) → Opus 96 kbps

    About 25 MB

    Questions

    Why does the first conversion take longer?

    The first time, your browser downloads the video engine (FFmpeg compiled to WebAssembly, about 31 MB) from this site. After that it’s cached, and the work itself runs on your device.

    Are my files uploaded?

    No. Everything happens in your browser on your own device, so your files are never sent to a server.