Turn your OGG files into MP3 files in seconds. Conversion happens in your browser, so your files are never uploaded to a server.
or drop them here. You can also paste an image (Ctrl+V).
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Files
These sample files are generated on the page. Convert them to try it out, or add your own.
Click “Choose OGG files” or drop them on the page. You can add several at once.
MP3 is already selected. Choose the bitrate, from 128 to 320 kbps.
Click “Convert”, then download your MP3 file. With several files, grab everything at once as a ZIP.
OGG files turn up in video games and their mods, on Wikimedia Commons, in Audacity exports and among Android ringtones. Your browser decodes the sound, which is then converted to 44.1 kHz and encoded as a constant-bitrate MP3, mono or stereo like the original. The Vorbis comments (title, artist, album, track number, year, genre…) are copied into the MP3 as ID3v2.3 tags.
For game music there is one catch: loop tags such as LOOPSTART, used by some game engines, are copied into the MP3 along with the other comments (TXXX tags), but a game engine does not necessarily read them in an MP3, which may then play once from start to finish. As for bitrate, a good-quality music OGG deserves 192 kbps or more. For short sound effects or speech, 128 kbps is plenty.
A free audio format, common in video games and on the web, that usually holds Vorbis or Opus sound. Good quality at a small size, but it is less widely supported than MP3 on older devices. Formatomat writes the sound in it as Opus, or copies an original Vorbis or Opus track into it as it is.
The most universal audio format. Its compression shrinks files a lot while keeping good listening quality, and it plays on every device.
OGG is a container. It usually holds Vorbis, but it can also carry Opus, as Telegram voice messages do, or even FLAC. You don’t need to know in advance: the browser identifies the codec and decodes it if it supports it, and the MP3 is then created the same way, whatever was inside.
Decoding is handled by the browser, and for a long time Safari could not read Ogg. On an iPhone, other browsers generally run on the same engine, so switching apps does not help. The simplest fix is to convert on a computer with Chrome, Edge or Firefox, then transfer the MP3 to your phone.
No. The file is read and converted by your browser, on your device. Nothing is sent to a server, and nothing is kept after you close the page.
MP3 is a lossy format. At the default bitrate (192 kbps) the difference is inaudible to most listeners; choose 320 kbps for the best quality.
As many as you like, for free and without signing up. Add them all, then download the results one by one or in a single ZIP. The maximum size depends on your device and browser, with a few caps that protect its memory (for example 20,000 files per archive or 5 million filled cells per workbook: see the home page FAQ); a file over one of them is not converted, and a message says so.
Formatomat is designed for recent browsers on computers, iPhone and Android, with no app to install. On an older iPhone, Safari may refuse some OGG files: update iOS or use a computer.
Drop to add your files