Audio converter
Files never leave your device.
Convert audio in your browser
Drop in audio or video files — MP3, WAV, M4A, FLAC, Opus, OGG, MP4, MOV, WebM and more — and convert them to MP3, WAV, M4A, FLAC or Opus. The conversion runs on your device, so nothing is uploaded and there’s no queue.
Questions
Are my files uploaded?
No. The conversion runs in your browser, on your device. Your files are never sent to a server, and closing the tab discards everything.
Will I lose quality?
Lossless outputs (WAV, FLAC) keep exactly what the source contains. Lossy outputs (MP3, M4A, Opus) use a high bitrate by default and never a higher one than the source, and converting a file to its own format copies it untouched unless you change a setting.
Is there a file size limit?
There’s no set limit. Files are converted on your device, so very large ones depend on its free memory and storage — an hour-long recording converts fine on a recent phone.
Can I convert several files at once?
Yes. Add as many files as you like; they convert one after another to the format you pick, and you can download each one or all of them together.
Which browsers does it work in?
Current Chrome, Edge, Firefox and Safari on desktop, and Chrome and Safari on phones. Firefox on Android can only convert WAV files. If a file can’t be converted in your browser, its row says so.