OGG to OPUS Converter

OGG (Vorbis) vs Opus — Which Should You Convert To?

Both are Xiph open codecs, and Opus is the newer one — since February 2013 the Xiph.Org Foundation has recommended Opus over Vorbis for new audio. Converting makes sense when you want smaller files at the same quality for portable or streaming use, or you need Opus for a modern toolchain (Discord bots, WebRTC). But this is a lossy-to-lossy transcode: quality can only hold or drop slightly, never improve — so if you still have the lossless master (CD rip, FLAC, or WAV), encode Opus from that instead.

Side-by-side Comparison

When to Pick Opus

• You want the smallest files at a given quality — Opus beats Vorbis at every bitrate, and the gap is largest below ~96–128 kbps.
• You are feeding an Opus-only or Opus-native pipeline: WebRTC, Discord bots, Telegram voice, or low-latency live audio.
• You are standardizing a modern library and want consistent, efficient encoding across speech and music (Opus switches modes automatically).

When to Keep OGG (Vorbis)

• You only need playback. Anything that decodes Opus also decodes Vorbis, so a one-off transcode buys you nothing but a second generation of lossy loss.
• Your target is an older device, car stereo, or app that predates Opus support — Vorbis or MP3 is the safer bet there.
• You have the lossless source. In that case skip both and encode Opus straight from the master with FLAC to Opus for the cleanest result.

How to Convert OGG to Opus

1. Upload Your OGG File: Drag and drop your .ogg files onto the page or click "+ Add Files." You can queue several at once and convert them with the same settings.
2. Pick a Quality Preset: Leave the default "Quality Preset" set to Very High for near-transparent music, or open Constant/Variable/Custom Bitrate to target a specific kbps. Match or exceed your source bitrate — downscaling a 96 kbps Vorbis file to 64 kbps Opus will be audibly worse.
3. Adjust Audio Channel or Sample Rate (Optional): Leave both on "Original" to preserve the source, or downmix to mono and lower the sample rate for voice-only files to shrink them further.
4. Convert and Download: Click "Convert" and download the .opus file. No sign-up, no watermark.

Frequently Asked Questions

Will I lose quality converting Vorbis to Opus?

Slightly, yes — this is a lossy-to-lossy transcode, so the encoder re-compresses audio that was already compressed once. At matching bitrates the loss is usually inaudible, but it is never zero and it never improves the original. If transparency matters and you still have a CD rip, FLAC, or WAV, encode Opus from that lossless source instead of from the Vorbis file.

Is Opus actually smaller than OGG Vorbis at the same quality?

Generally yes. In listening tests Opus matches Vorbis quality at a lower bitrate, with the biggest savings below roughly 96–128 kbps. Per Xiph's own recommended settings, Opus at 128 kbps VBR is "pretty much transparent" for stereo music, where Vorbis typically needs ~160–192 kbps for the same result.

What bitrate should I choose for Opus?

For stereo music, 96–128 kbps VBR is near-transparent and is Xiph's recommended range for storage. For voice or podcasts, 28–40 kbps is plenty. The one rule that matters: do not target a bitrate below your source — transcoding 96 kbps Vorbis down to 64 kbps Opus throws away quality you cannot get back.

Does everything that plays Vorbis also play Opus?

Not quite, which is why a one-off conversion for playback is rarely worth it. Opus has broad modern support — Chrome, Firefox, Edge, Android, VLC, WhatsApp, Telegram, and Discord all handle it — but it arrived later than Vorbis. Safari only added Ogg-container Opus playback in version 18.4 (2025), iOS gained native Opus encode/decode in iOS 17, and many older car stereos, hardware players, and iTunes-based workflows still expect MP3. For maximum legacy compatibility, convert OGG to MP3 instead.

Why does my Opus file end in .opus instead of .ogg?

Opus audio is carried inside an Ogg container, so the bytes are still "Ogg," but Xiph recommends the .opus extension specifically for Opus-in-Ogg streams to distinguish them from Vorbis .ogg files. The output here uses .opus so players and tools recognize the codec immediately.

Can I shrink a whole Vorbis library at once?

Yes — upload multiple .ogg files and they convert with the same preset, which is the main legitimate reason to do this conversion (a smaller library for phones or streaming). If your goal is purely size rather than the Opus codec itself, the Audio Compressor lets you target a file size or percentage while keeping the format.

What happens to my files after conversion?

Your OGG file is uploaded over an encrypted connection, converted on our servers, and the upload plus the Opus result are deleted automatically a few hours after conversion. There is no sign-up, no watermark, and files are never shared or made public. In our testing, a 4-minute stereo OGG at the Very High preset produced an Opus file around 110–130 kbps with no audible difference from the source on headphones.