This tool converts MP3 to OPUS completely free and without any functional limitations. Since it is based on the browser API, the processing speed is the fastest because all files are processed locally on your device and are not uploaded to our server.
Batch Convert MP3 to OPUS Online
With this SoConvert tool, you can convert multiple MP3 files to OPUS directly in your browser for free. You can also adjust the audio Bitrate during conversion.
Click the Options button in the top-right corner to open the settings panel, where you can customize the output OPUS audio Bitrate.
Other Settings Explained:
Encoding Speed: Choose the encoding speed. Faster speeds result in larger file sizes.
Audio Bitrate: Recommended range is 8 – 320 Kbps.
Cut Audio: Trim the audio using a start and end time in HH:MM:SS format.
For example, setting 00:00:05 to 00:00:08 will cut a 3-second clip from the audio.
Before converting, you can choose a local folder to save the converted OPUS files. Once an MP3 file is successfully converted, it will be automatically saved to your selected directory—no manual download required.
Save All: After all MP3 files are converted, click “Save All” to export every OPUS file to your chosen folder in one go.
About MP3 files
MP3 (MPEG-1 Audio Layer III) is a widely used digital audio format that compresses sound files with minimal quality loss, making them smaller for easy storage and streaming. Developed in the 1990s, it became the standard for music sharing and portable players. MP3 uses lossy compression to remove inaudible frequencies, balancing file size and audio fidelity. Though newer formats like AAC and FLAC offer better efficiency or quality, MP3 remains popular due to its universal compatibility across devices and platforms.
About OPUS files
Opus is a versatile, open-source audio codec developed by the IETF, combining the strengths of both speech and music compression. It delivers high-quality sound at very low bitrates, making it ideal for VoIP, streaming, and real-time communication. Opus excels in dynamic bitrate adjustment and works well across a wide range of applications, from low-latency gaming chats to high-fidelity music streaming. Supported by most modern browsers, devices, and platforms, it has become a key format for internet audio.
