Convert M4A files into universally compatible MP3s that play on truly every device and player. Conversion runs right in your browser, so your files are not uploaded by default.
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.
Since both M4A and MP3 are lossy, re-encoding can shed a tiny bit of quality. At higher bitrates, though, it's hard to notice.
MP3 is arguably the most compatible audio format and plays on old car stereos, simple players and every operating system. M4A isn't supported everywhere.
No, conversion runs locally in your browser by default. An optional server mode is available for very large files.
You can process multiple files one after another. Since everything runs locally, the speed mainly depends on your device's performance.