Convert MP3 to OPUS online, free
Ultra compressé pour le web — processed on our secure servers in France. Files deleted after conversion, no sign-up.
Drop your MP3 file here
or click to choose a file — conversion to OPUS
MP3 vs OPUS — technical comparison
Frequently asked questions
How to convert MP3 to OPUS?+
Drop your MP3 file in the zone above, or click to select it. The OPUS conversion starts automatically on our secure servers — no software to install.
Is converting MP3 to OPUS secure?+
Yes. ConvertLab processes your files on secure servers located in France, over an encrypted connection. They are never shared with any third party and are deleted immediately after the conversion.
Is there quality loss when converting MP3 to OPUS?+
OPUS uses lossy compression. Final quality depends on the compression rate you choose.
What is the maximum file size?+
Since the conversion runs on our servers, the limit no longer depends on your device. Files up to 100 MB are accepted. With NoLimit, up to 1 GB per file (250 MB for video).