OPUS to MP3 converter

Choose File

How to convert OPUS audio files to MP3 online?

Step 1. Upload OPUS-file

Click "Choose File" button to select a opus file on your computer. OPUS audio file size can be up to 40 Mb.

Step 2. Convert OPUS to MP3

Click "Convert" button to start conversion.

Step 3. Download your MP3

Let the file convert and you can download your MP3 file right afterwards.


Information about OPUS and MP3 file formats

Full nameOpus Audio FormatMPEG-1 or MPEG-2 Audio Layer III
File extension.opus.mp3
MIMEaudio/opusaudio/mpeg, audio/MPA, audio/mpa-robust
Developed byIETF codec working groupFraunhofer Institute
Type of formatAudioDigital audio
IntroductionOpus is a lossy audio coding format developed by Xiph and standardized by the IETF, designed to efficiently code speech and general audio in a single format, while remaining low-latency enough for real-time interactive communication and low-complexity enough for low end ARM3 processors. MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players.
Technical detailsOpus supports constant and variable bitrate encoding from 6 kbit/s to 510 kbit/s, frame sizes from 2.5 ms to 60 ms, and five sampling rates from 8 kHz (with 4 kHz bandwidth) to 48 kHz (with 20 kHz bandwidth, the human hearing range). An Opus stream can support up to 255 audio channels, and it allows channel coupling between channels in groups of two using mid-side coding. The use of lossy compression is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size of the CD file created from the original audio source.
Associated programsFFmpeg, AIMP, Amarok, cmus, foobar2000, Mpxplay, MusicBee, SMplayer, VLC media player, Winamp VLC media player, MPlayer, Winamp, foobar2000.
Sample filesample.opussample.mp3
WikiOPUS on WikipediaMP3 on Wikipedia