Online Opus Converter - Convert Audio to Highly Efficient Opus
Convert your audio files to the modern, versatile, and highly efficient Opus audio format. Opus excels at both speech and music, providing excellent quality at very low bitrates. Use our free online tool to convert from MP3, WAV, FLAC, AAC, video, and more to Opus. The service is secure (files deleted automatically), free, and requires no registration.
How to Convert Files to Opus Online
Creating Opus audio files is easy:
- Upload Your Source File: Select or drag and drop your audio or video file into the upload area above.
- Select Output Format: Choose
Opus from the 'Convert to:' dropdown list.
- Convert: Press the 'Convert' button to start the optimized Opus encoding.
- Download: Click the 'Download' button to save your Opus file when ready.
What is an Opus File?
Opus is a totally open, royalty-free, highly versatile lossy audio codec. Opus is unparalleled for interactive speech and music transmission over the Internet, but is also intended for storage and streaming applications. It is standardized by the Internet Engineering Task Force (IETF) as RFC 6716.
Opus incorporates technology from Skype's SILK codec (speech-optimized) and Xiph.Org's CELT codec (music-optimized). It can seamlessly adjust bitrate, audio bandwidth, and coding modes, making it incredibly flexible. It achieves high quality across a wide range of bitrates, outperforming most other lossy codecs (like MP3, AAC, Vorbis) especially at lower bitrates (e.g., 64 kbps and below). Opus files typically use the .opus extension.
Opus Advantages and Compatibility
- Efficiency & Quality: State-of-the-art performance, offering transparent quality for music at ~128 kbps and excellent speech quality well below 64 kbps. Often outperforms other lossy codecs at nearly all bitrates.
- Low Latency: Designed for real-time communication (like VoIP, video conferencing), with very low algorithmic delay.
- Versatility: Adapts dynamically to changing network conditions and content types (speech/music).
- Open & Royalty-Free: Can be used by anyone without licensing fees, promoting widespread adoption.
- Compatibility: Supported natively in modern web browsers (Chrome, Firefox, Edge) for WebRTC and HTML5 audio. Support is built into recent versions of Android and available in major players like VLC and Foobar2000. Support in dedicated hardware players is less common than MP3/AAC but growing. iOS requires third-party apps.
- Use Cases: Voice over IP (VoIP), video conferencing, game chat, music streaming, podcasts, audiobooks, general audio storage where efficiency is key.
How to Open an Opus File
Opus support is increasingly common in modern software:
- VLC Media Player (Cross-platform)
- Foobar2000 (Windows)
- Google Chrome, Mozilla Firefox, Microsoft Edge (Web Browsers)
- Android (Native support in recent versions)
- Many modern communication apps (Discord, WhatsApp, etc.) use Opus internally.
- Third-party music players on iOS.
- FFmpeg-based applications.
For desktop use, VLC or Foobar2000 are excellent choices. On the web and Android, support is often built-in.
Explore Specific Converters
Need detailed information or want to set a different default format? Visit our specific converter pages: