OGG -> MP3 · Local tool
OGG to MP3
Convert an OGG or Opus file to MP3, which plays everywhere.
Last updated
How do I convert an OGG or Opus file to MP3?
Drop the file onto filetity's converter and it becomes an MP3 in the browser tab, with nothing uploaded. That matters here because most OGG files people convert are voice notes out of WhatsApp or Telegram, which are Opus inside an OGG container. Your browser decodes both Opus and Vorbis natively, and filetity supplies the MP3 encoder as a separate file, since no browser can write MP3 itself. Expect the MP3 to be somewhat larger than the OGG was: Opus is markedly more efficient than MP3, particularly for speech at low bitrates, so the same recording needs more bits. The trade you are making is size for compatibility, and if the destination accepts OGG, compressing it as OGG will beat any MP3 of the same size.
01 / Your device
the file stays here
02 / Browser memory
the work runs locally
03 / Back to you
saved on this device
When you would use this
Situations, not settings.
- A WhatsApp or Telegram voice note
- Those are Opus in an OGG container. Plenty of desktop software still refuses them, and converting is faster than arguing with it.
- Game or engine audio you need elsewhere
- A lot of games ship Vorbis in OGG. Both codecs decode here, because the container does not tell you which is inside until you read it.
- Sending a recording to somebody on older software
- The MP3 will be a bit larger, since Opus is more efficient for speech. That is the trade: size for compatibility.
How it works / no cloud
A conversion engine, not an upload form.
An OGG is a container, usually holding Vorbis or Opus, and your browser decodes both. The decoded audio is re-encoded to MP3 by an encoder filetity serves as its own file. Nothing is uploaded, which matters because most OGG files people convert are voice notes out of a chat app.
- Offline ready
- Installable app
- No file limit queue
Straight answers
No accordion. Nothing hidden.
- Is it free?
- Yes, with no watermark and no page limit.
- Does it need an account?
- No. There is no account system.
- Is my file processed on my device?
- Yes. The file is read by your browser and never uploaded. There is no server to send it to.
- What formats are supported?
- OGG and OGA containers holding Vorbis or Opus, and bare .opus files. MP3 out, or M4A and WAV.
- What are the limits?
- A very old OGG using a codec the browser does not know is refused by name. In practice Vorbis and Opus cover essentially every file you will meet.
- Does it work on mobile?
- Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.
- Does it work offline?
- Yes, once the page has loaded. The tool keeps working with no network connection.
- Where do OGG files come from?
- Mostly chat apps and games. WhatsApp and Telegram voice notes are Opus in an OGG container, and a great many games ship their audio as Vorbis. Both are excellent formats that a surprising amount of consumer software still refuses to open, which is the only reason to convert.
- Is Opus the same thing as Vorbis?
- No, though both usually live in an OGG file. Vorbis is the older one and Opus replaced it, being better at low bitrates and much better for speech, which is why voice notes use it. This page takes either, because the container does not tell you which is inside until you read it.
- Will the MP3 be bigger than the OGG?
- Usually, yes. Opus is markedly more efficient than MP3, especially for speech at low bitrates, so the same recording needs more bits as MP3. The conversion never asks for more than the source spends, which limits the growth, but the trade you are making is size for compatibility.
- Can I keep it as OGG and just make it smaller?
- Yes, and that is usually the better answer if the destination accepts OGG. The audio compressor takes an OGG in and writes an OGG out at a lower bitrate, which will beat any MP3 of the same size. Convert to MP3 only when something will not play the original.
- Does a voice note keep its length exactly?
- The audio is preserved exactly in length. What does not survive is anything the chat app stored around it, such as the waveform preview or the timestamp, because those live in the app rather than in the file, and an MP3 has nowhere to keep them.
Keep working locally
3 available · more coming