AudioUtils converts audio formats entirely inside your browser. Pick a file, choose an output format, download the result. The file is never uploaded, because the conversion runs on your own machine rather than on a server. Under the hood it is FFmpeg compiled to WebAssembly, so there is nothing to install and no plugin to enable.
Seventy-seven converters cover every major audio format: MP3, WAV, FLAC, OGG, M4A, AAC, WMA, AIFF and Opus in the combinations people actually need, from MP3 to WAV through to lossless pairings like WAV to FLAC. A second group extracts audio out of video (MP4, MOV, MKV, AVI, WebM and more) into MP3, WAV, M4A or FLAC, and there is a dedicated MP3 to M4R converter for iPhone ringtones.
There is no email gate and no signup wall at any point. It works on Mac, Windows, iPhone, Android and Linux in any modern browser, and the site carries guides and a blog alongside the tools.
