AnyFormat

00 OGG → MP3

OGG to MP3

For everything outside the open-source world.

Drop files or a folder here

or choose from your device · paste with ⌘V / Ctrl+V

.ogg .oga

03Options 5

Right for speech, wrong for music. At a fixed quality the file size does not change — but mono tolerates a much lower quality than stereo, so combine the two to actually shrink the file.

Leave at 0 for the whole file.

0 means run to the end.

  • No upload The conversion runs in this tab. Your file never travels — not to us, and not to the advertising.
  • No sign-up, no email, no daily cap There is no account system to sign up to.
  • No size limit we invented Only your device's memory — about ~2 GB on a desktop browser, ~400 MB on a phone.
  • Turn your Wi-Fi off and convert anyway The conversion needs nothing but this page. Ads will not load without a connection; your file will still convert. That is the whole claim, and it takes five seconds to check.

Converts OGG to MP3. Ogg is a container used heavily in games, Wikipedia media, Linux software and messaging apps, and supported by almost no consumer hardware — which is the whole reason for this page.

What is actually inside your .ogg

Ogg is a container, not a codec. It usually holds Vorbis (older, common in games and Wikipedia) or Opus (newer, used by WhatsApp voice notes, Discord and YouTube). The extension is the same either way.

Both are read here. Opus is genuinely excellent — it beats MP3 comfortably at every bitrate — so converting to MP3 is a step down in efficiency, taken for compatibility. Keep the High setting to make the second generation inaudible.

Voice notes are the common case

A WhatsApp or Signal voice note is Opus, often at a very low bitrate because it was optimised for a mobile connection. Converting to MP3 will not improve it — the source is what it is — but it makes it playable on things that have never heard of Opus.

For those, Low quality with mono is the right choice: the source is mono speech and anything more is spent encoding silence.

How MP3 encoding works without a server

Browsers decode MP3 but do not encode it — there is no MP3 encoder in WebCodecs. The encoding here is LAME, the reference open-source MP3 encoder, compiled to WebAssembly and loaded only when you actually convert to MP3.

It is the same encoder desktop software has used for twenty years, producing standard files that play everywhere. Because it is fetched on demand, pages that convert to WAV or M4A never download it.

Other names for this

Also searched as “convert ogg to mp3”, “vorbis to mp3”, “opus to mp3”.

Questions

Does it handle Opus as well as Vorbis?
Yes. Both are read from the Ogg container automatically; the extension does not distinguish them.
My voice note sounds poor after converting.
It was already low-bitrate — voice notes are compressed hard for mobile networks. Converting cannot improve it and, at High quality, does not make it noticeably worse.
Is my file uploaded?
No. The demuxing, decoding and encoding all happen in this tab using the browser’s own media stack plus a WebAssembly encoder. A recording can be an interview, a lecture, a private call — none of it is transmitted. Turn your Wi-Fi off after the page loads and it still works.
How large a file can I convert?
There is no imposed limit, only your device’s memory — around 2 GB in a desktop browser and 400 MB on a phone, since the file is held in memory while it converts. A two-hour video converts in well under a minute on a laptop.
Can I convert several files at once?
Yes. Drop as many as you like, or a whole folder. Each keeps its original name with the new extension, and you can download them individually or as a ZIP.