Convert OGG to Opus
Turn your OGG into an Opus. Opus is the usual choice for voice and video calls, WebRTC and game chat. Your file never leaves your computer.
Need the other direction? Convert Opus to OGG
How to convert OGG to Opus
- 1 Drop your OGG .ogg or .oga file onto the page, or click to browse for it.
- 2 Set the quality, or leave the default, which keeps the file small without anything showing.
- 3 Convert. The work happens on your own machine, so how long it takes depends on your computer and the file.
- 4 Download the Opus, or add more files and do the whole set in one go.
Why convert OGG to Opus
- The best sound for the size of any widely supported format.
- Latency as low as 5 ms, suitable for real time.
- Podcasts, where speech still sounds excellent in a small file.
- OGG: superseded by Opus for most new work.
OGG compared with Opus
How the two formats differ on the things that decide whether a conversion is worth making.
| Property | OGG | Opus |
|---|---|---|
| File extension | .ogg | .opus |
| Introduced | 2000 | 2012 |
| Developed by | Xiph.Org Foundation | Xiph.Org and IETF |
Quality and what changes
Both formats are lossy, so this is a second generation of compression: the OGG is decoded back to pixels that already carry its artefacts, and Opus then compresses that. The damage compounds rather than cancelling out, which is why repeated round trips visibly degrade an image. Encode at a higher quality than the source used, and convert once from the best copy you have rather than from an already converted file.
- One Opus limitation to keep in mind: car stereos and standalone players mostly will not open it.
Questions about OGG to Opus
Will converting OGG to Opus lose quality?
A little. Both formats are lossy, so the file is decoded and compressed a second time and the two sets of artefacts add up. At a high quality setting the difference is hard to see, but avoid repeated round trips between lossy formats.
Is my OGG file uploaded anywhere?
No. The whole thing runs inside the browser tab you already have open. Your OGG is read straight from your own disk, converted on your machine and handed back as an Opus. Nothing is sent anywhere, nothing is stored and there is no account.
Is there a file size limit?
There is no server-side limit because no server sees the file. The real ceiling is your device memory, since the input and the output both have to fit in the tab. A few hundred megabytes is usually fine on a desktop machine and considerably less on a phone.
Can I convert several OGG files at once?
Yes. Add as many as you like and they are processed one after another, then offered as separate Opus downloads or as a single ZIP. Speed depends on your own processor rather than on a queue.
Does the converter work offline?
Yes, after the page has loaded once. The engine is cached by the browser, so you can disconnect, reload and keep converting. That falls out of doing the work locally rather than being a separate mode you switch on.