How do I convert MP3 to Opus?

Upload your MP3 file using the box above, confirm Opus as the output format, then select Convert. The converted file is ready to download as soon as processing finishes — usually in a few seconds.

Is converting MP3 to OPUS free?

Yes, and there is nothing to sign up for. Every conversion is free, there is no paid tier, and the limits are the same for everyone.

Will the quality change when converting to Opus?

OPUS uses lossy compression, so some data is discarded to keep the file small. The default quality setting is tuned to be visually or audibly transparent for most material, and you can raise it in the conversion settings.

What happens to my file afterwards?

The uploaded file is deleted as soon as the conversion completes, and the converted file is removed automatically once its retention window ends. Download links are signed and expire within minutes.

mp3opus

Convert MP3 to Opus

Free online converter for MP3 files. Low-latency codec with excellent quality at low bitrates. Nothing to install, no watermark, and every file is deleted automatically.

Drag and drop your files

Upload a MP3 file to convert it to Opus. Up to 200 files at once, 10 GB each.

Free · up to 200 files · 10 GB each · files deleted automatically after 168 hours.

About MP3 and OPUS

MP3

The most widely compatible lossy audio format.

audio/mpeg

Opus

Low-latency codec with excellent quality at low bitrates.

audio/opus

Other MP3 conversions

mp3 to wav
mp3 to flac
mp3 to ogg
mp3 to aac
mp3 to m4a

Other ways to get Opus

wav to opus
flac to opus
ogg to opus
aac to opus
m4a to opus
mp4 to opus
webm to opus
mkv to opus