Convert modern Opus files into the universally supported MP3 format. By default the conversion runs locally in your browser, with no upload at all.
In “Local” mode your file never leaves your device. No uploads, no server – ideal for sensitive recordings.
Pick “Local” for full privacy or “Server” for very large files and every format.
No sign-up, no queue, no watermark. Choose a file, convert, download.
Opus and MP3 are both lossy, so this is a transcode that can cost a little extra quality. At a high bitrate the difference stays unnoticeable.
Opus isn't supported on every device or app. MP3 runs almost everywhere, making it the safe choice for maximum compatibility.
Yes. By default the conversion happens entirely in your browser. An optional server mode is there only for very large files.
192 to 320 kbps suits music well. A bitrate higher than the source Opus won't improve the quality.