OPUS to OGA Converter

Convert OPUS to OGA Online

A .opus file is already Opus audio inside an Ogg container — RFC 7845 defines exactly that encapsulation — and .oga is Xiph.Org's generic "Ogg audio" extension. So this conversion is mostly about the codec and the filename: by default this tool re-encodes the audio to Vorbis (the older Xiph codec) and writes it as .oga, which is what legacy players and tools that read Vorbis-in-Ogg but choke on raw .opus actually want. If you instead pick the Opus codec in Advanced Options, the result is closer to a container/extension re-label than a real conversion. The tables below explain both formats so you can choose deliberately.

OPUS at a Glance

OGA (Ogg Audio) at a Glance

How to Convert OPUS to OGA

1. Upload Your OPUS File: Drag and drop your .opus onto the page or click "+ Add Files." Queue several at once and they all run with the same settings.
2. Choose the Audio Codec: Open Advanced Options. The OGA target defaults to Vorbis; the Audio Codec dropdown also offers Opus, FLAC, and Speex. Leave it on Vorbis for legacy Vorbis players, or pick Opus to keep the original codec (see the FAQ on why that is essentially a re-wrap).
3. Set Quality Preset, Bitrate, or Trim (Optional): Leave Quality Preset on the recommended setting, or switch File Compression to Custom Bitrate, Constant Bitrate, or Variable Bitrate for a specific target. Adjust Audio Channel or Audio Sample Rate to match the source, and use Trim to export only a start time and duration.
4. Convert and Download: Click Convert and save your .oga file individually or as a ZIP. No sign-up, no watermark.

Frequently Asked Questions

Isn't a .opus file already an Ogg file — so why convert it to .oga?

Yes, technically it is. RFC 7845 defines how Opus is encapsulated in the Ogg container, so a standard .opus file is Opus-in-Ogg already. The reason to make a .oga is compatibility: some media servers and players treat .oga as their audio extension and either don't recognize the .opus extension or don't include an Opus decoder. Writing the audio as .oga — by default with the Vorbis codec — gives those tools a file they can actually open.

Does this conversion lose quality?

With the default it does. The OGA target defaults to Vorbis, so the tool decodes your Opus stream and re-encodes it as Vorbis — a lossy-to-lossy transcode that discards a little more detail on top of what Opus already removed. Vorbis is also the older Xiph codec (since 2013 Xiph.Org has recommended Opus over Vorbis), so this is moving backward within the same family. To keep added loss minimal, pick a Vorbis bitrate at or above the source — a 96 kbps Opus track re-encoded to roughly 128 kbps Vorbis sounds essentially identical. If you choose Opus in the Audio Codec dropdown instead, there is no codec change to lose quality.

If I pick Opus as the codec, is it just a rename?

Close to it, but done properly. Choosing Opus for a .oga output keeps the Opus codec, so it is effectively a re-wrap of Opus into an Ogg/.oga file rather than a true conversion — the audio is not degraded. That differs from simply renaming .opus to .oga in your file manager, which can leave the internal Ogg signaling untouched; running it through the converter rewrites a clean Ogg .oga stream. Use this when something specifically wants the .oga extension but can still decode Opus.

Why is Vorbis the default instead of Opus?

Because .oga exists largely to serve players and toolchains from the Vorbis era, and Vorbis is the codec they're most likely to decode. The .oga/.ogg ecosystem — older game engines, Linux media players, internet-radio stacks, archival workflows — was built around Vorbis for two decades. Defaulting to Vorbis makes the output "just work" for that audience. If your target understands Opus, switch the Audio Codec to Opus and skip the quality loss entirely.

Can OGA hold FLAC for a lossless result?

The container can, and FLAC is offered in the Audio Codec dropdown — but it won't make the audio lossless retroactively. Your source is Opus, which already discarded data; encoding the decoded audio to FLAC produces a lossless copy of a lossy original, which is larger than the Opus with no quality gained back. FLAC-in-OGA only makes sense if a downstream tool specifically requires a lossless stream inside an .oga and you accept the bigger file. For normal use, Vorbis or Opus is the right pick.

Will my track title, artist, and other tags carry over?

Mostly yes. Opus and Vorbis both store metadata as Vorbis Comments, so standard fields like TITLE, ARTIST, ALBUM, and DATE map across cleanly, and embedded cover art in the METADATA_BLOCK_PICTURE field generally transfers. App-specific fields that aren't part of the Vorbis Comment standard (a messaging app's private timestamp, for example) may not survive. If you need a different output entirely, OPUS to MP3 is the universal choice and OPUS to WAV gives you an uncompressed master for editing.

How are my OPUS files handled, and how long are they kept?

Your .opus is uploaded over an encrypted connection, converted on our servers, and the files are deleted automatically a few hours after conversion — no sign-up, no watermark, and your files are never shared or made public. In our testing, a 3-minute 96 kbps Opus voice recording re-encoded to the default Vorbis preset produced an .oga of roughly 4 MB; choosing the Opus codec instead kept the file near its original size since the audio is not re-encoded.