Audio

The OPUS format

The most efficient audio codec available today: it’s the one behind WhatsApp voice messages and video calls. At 64 kbps speech is crystal clear and music surprisingly good.

Drop your files hereor (OPUS and over 40 other formats). You can also paste an image.No upload: everything happens on your device

Fact sheet

OPUS

Opus Interactive Audio Codec

Best for: Speech, podcasts, streaming, tiny files.
Limits: Older players and car stereos don’t recognise it.
Compression: lossy
Typical bitrate: 24-160 kbps
Compatibility: modern browsers and apps
Extensions: .opus
MIME type: audio/opus
Since: 2012

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Tools for OPUS files

Questions about the OPUS format

How do I open a OPUS file?

Usually a double click is enough: operating systems and the most common programs recognise it. If the program or website you use won’t accept it, you can convert it here to a more common format, for example MP3.

What extension do OPUS files have?

.opus. The MIME type is audio/opus.

Does converting a OPUS lose quality?

It depends on the target format: to lossless formats (PNG, FLAC, WAV) nothing is lost; to compressed formats (JPG, MP3, MP4) you can choose the quality to balance size and result.