OPUS to OGG Converter

How to Convert OPUS to OGG Online

1. Upload Your OPUS Files: Drag and drop or click "+ Add Files" to select OPUS audio files from your computer. WhatsApp voice notes, Telegram audio messages, Discord recordings, and yt-dlp downloads all use OPUS by default and work here. Batch is supported — drop in an entire chat export.
2. Pick Quality Preset or Bitrate: Default is the Highest quality preset. Switch to "Custom Bitrate" or "Constant Bitrate" for a specific target (96, 128, 160, 192, 256 kbps); "Variable Bitrate" tracks complexity and usually wins at the same average size; or use "Specific file size" to cap the output (e.g. 8 MB to clear Discord's free upload limit).
3. Set Audio Channel, Sample Rate, and Trim (Optional): Channel and Sample Rate default to ORIGINAL — keep them unless a downstream tool requires mono or a specific rate (44.1 kHz for music, 48 kHz for video sync, 16 kHz for ASR). Use Trim to enter a start time and duration (HH:MM:SS or seconds).
4. Convert and Download: Click Convert. Files re-encode in your browser session to an OGG Vorbis (.ogg) file and download individually or as a ZIP — no sign-up, no watermark.

Why Convert OPUS to OGG (Vorbis)?

Both OPUS and OGG Vorbis are open, royalty-free audio formats from the Xiph.Org Foundation. They even share the same Ogg container — the difference is the codec inside. OPUS (RFC 6716, standardized September 2012) is the newer, technically superior codec; Vorbis (1.0 reference implementation released July 2002 by the Xiph.Org Foundation) is older but has nearly universal legacy support. Common reasons to transcode OPUS → OGG Vorbis:

• Game engine and middleware compatibility — Godot, Unity (via its Vorbis import path), older Unreal Engine projects, FMOD, and Wwise have shipped reliable Vorbis decoders for two decades. OPUS support is now broad but still inconsistent across older project templates and plugins.
• Legacy media players and embedded devices — Hardware media players, in-car head units, smart TVs, and DLNA servers built before roughly 2015 often play OGG Vorbis but not OPUS. Vorbis is the safe default for "just works" playback.
• Sharing voice notes outside the messaging app — WhatsApp and Telegram export voice messages as .opus files, which won't open in Windows Media Player on older Windows builds, iTunes, or many corporate desktop policies. OGG Vorbis is more widely registered.
• Audio editors and DAWs without Opus support — Audacity added Opus import in 3.0 (2021); older Audacity, FL Studio, and Reaper versions don't decode .opus but accept .ogg Vorbis cleanly.
• Streaming server presets — Icecast/Shoutcast presets, AzuraCast, and self-hosted radio stacks almost all default to Vorbis streams for low-bitrate music — the ecosystem of clients still expects audio/ogg with Vorbis inside.
• Avoiding messaging-app caps — Compressing to a target file size (e.g. 8 MB) when re-sharing a long voice memo through Discord's free 10 MB upload cap or Gmail's 25 MB attachment cap.

OPUS vs OGG Vorbis — Format Comparison

Bitrate Choice for OGG Vorbis Output

Frequently Asked Questions

Will converting OPUS to OGG Vorbis lose quality?

Yes — both formats are lossy, so this is a transcode (lossy-to-lossy), which always loses a small amount of data on top of what OPUS already discarded. Pick a Vorbis bitrate at or above the source OPUS bitrate to keep the loss imperceptible. A 64 kbps OPUS voice note re-encoded to q4 (128 kbps) Vorbis sounds essentially identical; the same source crushed down to q1 (80 kbps) will sound noticeably worse than just keeping the OPUS.

Why is my WhatsApp voice note an .opus file in the first place?

WhatsApp, Telegram, Signal, and Discord all use OPUS for voice messages because it's the best codec for variable-bandwidth voice at low bitrates (typically 16-32 kbps for speech). The exported file lands as .opus, which Windows Media Player on older builds, iTunes, and many email clients won't open. Converting to OGG Vorbis (or MP3 / WAV) makes the file play anywhere.

Both formats use the Ogg container — why isn't this just a rename?

Renaming .opus to .ogg only changes the filename extension; the codec stream inside is still Opus. Players that don't understand Opus will fail to decode regardless of the extension. Real conversion decodes the Opus stream to PCM and re-encodes it with the Vorbis codec inside the Ogg container — that's what produces a file old Vorbis-only players can actually decode.

Which is technically better, OPUS or OGG Vorbis?

OPUS, by a clear margin in Xiph.Org's own listening tests, especially at 64-96 kbps. Opus combines the SILK (speech) and CELT (music) coding modes, supports algorithmic delay as low as 5 ms, and handles 6-510 kbps. Since 2013 the Xiph.Org Foundation has officially recommended Opus for new applications. You convert to Vorbis for compatibility, not for quality.

What sample rate and channel settings should I pick?

Keep both at ORIGINAL unless you have a reason to change. Opus internally resamples everything to 48 kHz, so most .opus files decode at 48 kHz; Vorbis happily encodes at 48 kHz. Downsample to 16 kHz only if you're targeting speech-recognition workflows. Switch to mono if the source is a voice note that was recorded mono — it will halve the output file size with zero perceptual loss.

Can I hit a specific output file size?

Yes — pick "Specific file size" in the File Compression section and enter the target (e.g. 8 MB). The converter calculates the bitrate needed for your trimmed duration to land at that size. Useful for clearing Discord's 10 MB free upload cap, fitting under Gmail's 25 MB attachment ceiling, or staying inside a forum's upload limit. For granular control over chunks instead, use the Audio Cutter tool first.

Will track titles, artist, and other metadata transfer?

Mostly yes. Both formats use Vorbis Comments for metadata, which means tags like TITLE, ARTIST, ALBUM, and DATE map across cleanly. Some custom or app-specific fields (WhatsApp's timestamp metadata, for example) may not survive — they're not part of the Vorbis Comment standard. Embedded album art using the METADATA_BLOCK_PICTURE field generally transfers.

Can I batch-convert an entire WhatsApp chat export?

Yes — drop every .opus file in at once and they convert in parallel within your browser session. Settings apply uniformly (typical for voice notes from one conversation). Download them individually or as a single ZIP. If you also want to compress without re-encoding to Vorbis, see Compress OPUS instead — that keeps the Opus codec and just lowers the bitrate.

What if I need OPUS back from the Vorbis output later?

You can reverse the conversion with OGG to OPUS, but every transcode adds a small amount of loss. If you might need the original later, keep the source .opus file as your master and treat the OGG Vorbis as a distribution copy.