OPUS → OGG · Free · No Upload
Free Online OPUS to OGG Converter — No Installation
Convert Opus to OGG (Vorbis) right in your browser, in seconds. Free, unlimited, and private: your file never leaves your device.
100% local processing: your file never leaves your device. Once the engine is ready, this tab can keep converting offline. Reopening or reloading offline may not work.
Supported formats:Files .opus up to 300 MB — processed locally · Video and virtually any audio format are also accepted — we extract the audio automatically.
How it works
- 01
Upload the OPUS file
Drag the .opus file to the area above or click to select. Files up to 300 MB are accepted — everything is processed locally.
- 02
The conversion runs in your browser
FFmpeg (the same engine used by professionals) runs in WebAssembly right on the page. No bytes are sent to servers — total privacy.
- 03
Download the OGG
In seconds, the .ogg file is ready for download, ready to play, edit, or share.
Frequently asked questions
Why convert OPUS to OGG?
iTunes, car players, and older editors stumble on .opus—a voice message exported from WhatsApp won't open on every PC. As MP3/M4A it plays on any device and can be sent for transcription. OGG compresses well with high quality and is an open, royalty-free format—great for web and games.
Where do OPUS files come from?
Typically from voice messages from WhatsApp and Telegram, audio from YouTube videos (inside WebM) and recordings from Discord and VoIP apps. Standardized by the IETF in RFC 6716 (2012), combining SILK (Skype) and CELT (Xiph); it always operates internally at 48 kHz, with latency low enough for calls.
Is it worth using OGG?
OGG compresses well with high quality and is an open, royalty-free format—great for web and games. Ogg container with the Vorbis codec; WhatsApp audio uses Opus inside .ogg. Typical bitrate 96–192 kbps.
Do I lose quality when converting OPUS to OGG?
There is a re-encoding between two compressed formats, with minimal technical loss — imperceptible for voice and most uses. If you're going to edit the audio multiple times, prefer converting to WAV or FLAC and compress only at the end.
What if I need a transcript of this audio?
After converting, you can transcribe the file with AI on VoxScriber: 30 free minutes per month, with automatic punctuation and speaker identification. Ideal for WhatsApp audio messages, meetings, and interviews.
Is my file sent to any server?
No. All processing is local (FFmpeg compiled to WebAssembly running on the page). The file never leaves your device—it even works offline after the page loads.
Is there a size or quantity limit?
The limit is 300 MB per file (browser memory). There is no limit on the number of uses. For larger files, VoxScriber processes them on the server with uploads up to 5 GB.
Need the text from this audio? Transcribe with AI — 30 min free
Create free account →30 minutes/month free. No credit card required.
Keep exploring
Tools
Convert OPUS to MP3
MP3 is the format that opens on ANY device made since the 1990s — the safe choice for sharing, attaching to email, and playing on your car stereo.
Convert OPUS to WAV
WAV is the WORKING format: lossless editing, accepted by every audio software, and what telephony/IVR systems usually require (8 kHz mono WAV).
Convert OPUS to M4A
AAC delivers the same quality as MP3 with about 30% less space — it's MP3's technical successor and the Apple ecosystem standard.
Convert MP3 to OGG
Leaving MP3 usually means needing WAV to edit without accumulating loss (recompressing MP3 degrades every generation) or a format required by a specific system — IVR/telephony wants 8 kHz WAV, iPhone ringtones want M4R.
Convert WAV to OGG
WAV takes about 10 MB per minute (16-bit/44.
Convert M4A to OGG
Older stereos, car radios, and some corporate systems won't open M4A — an iPhone voice memo arrives and no one can play it.