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OGGOpus

Convert OGG to Opus

This free OGG to Opus converter changes your Ogg Vorbis (.ogg) file into a Opus Audio (.opus) file, right in your browser. There is nothing to install, no account to create, and no limit on how many files you convert.

100% private. Your file is processed locally in your browser with WebAssembly — it is never uploaded to a server, stored, or seen by anyone.

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The conversion runs on your own device using ffmpeg compiled to WebAssembly (ffmpeg.wasm), so your file is never uploaded to a server. Opus is best for low-bitrate voice and streaming, which is the usual reason to convert from OGG.

Why convert OGG to Opus?

  • OGG and Opus are similarly compatible, so you are mainly changing the container.
  • Opus compresses more efficiently than OGG, so expect a smaller file at the same quality.
  • Pick Opus when you need a file made for low-bitrate voice and streaming.

OGG vs Opus

PropertyOGGOpus
Full nameOgg VorbisOpus Audio
ContainerOggOgg
Typical codecVorbisOpus
CompatibilityModern playersModern players
LosslessNoNo
Best forOpen-source apps and gamesLow-bitrate voice and streaming

How to convert OGG to Opus

  1. Add your OGG file

    Drag and drop your .ogg file onto the upload area, or click to browse and pick it from your device.

  2. Start the conversion

    Click "Convert to Opus". Everything runs locally with ffmpeg compiled to WebAssembly (ffmpeg.wasm) - your file stays on your device.

  3. Wait a few seconds

    A progress bar shows the conversion. The first run is slightly slower while the engine loads, then it is cached.

  4. Download your Opus file

    When it finishes, download the .opus file straight to your device.

Frequently asked questions

Is this OGG to Opus converter free?
Yes. It is completely free with no signup, no watermark, and no limit on how many files you convert. It is supported by ads, which keeps the conversion itself free.
Are my files uploaded to a server?
No. The conversion runs locally in your browser using ffmpeg compiled to WebAssembly (ffmpeg.wasm), so your file is processed in memory on your own device and is never uploaded, stored, or seen by anyone.
Will I lose quality converting OGG to Opus?
The audio is re-encoded to Opus, which is lossy. At a sensible bitrate the difference is hard to hear, but converting back and forth repeatedly will degrade quality.
Will the file get smaller or larger?
Smaller. Opus (smallest) compresses more efficiently than OGG (small) at the same quality.
What is the difference between OGG and Opus?
OGG is Ogg Vorbis (an Ogg container, typically Vorbis); Opus is Opus Audio (an Ogg container, typically Opus). Opus is best for low-bitrate voice and streaming, while OGG is best for open-source apps and games.
How long does the conversion take?
Most files finish in a few seconds to under a minute, depending on length and your device. The first conversion is a little slower while the engine downloads and caches, then later runs start instantly.

Related conversions

MP3 → OpusWAV → OpusM4A → OpusOGG → MP3

Need more formats or options? Use the full Audio Converter.