About this tool
OGG Vorbis is what game engines (Unity, Godot, Source, RPG Maker), Discord soundboards, and many open-source apps expect for music and sound effects. Converting MP3 to OGG in your browser gives you a file at the quality level you choose; at q6 (about 192 kbps) the result is indistinguishable from the source, and Vorbis loops cleanly where MP3 leaves an audible gap.
About the formats: MP3 is the universal lossy audio format. Practically every device, car stereo, and app made in the last 25 years plays it, and at 192-320 kbps it is indistinguishable from the original for most listeners. OGG files hold Vorbis or Opus audio, open formats used by games, Linux software, and some voice recorders. Quality per megabyte is excellent, but device support outside the desktop is spotty.
Everything happens inside your browser. Your file is never uploaded to a server: the conversion runs on your own device using WebAssembly, and the result is downloaded straight from memory. Close the tab and nothing is left behind.
How to use it
- Drop your MP3 files into the box above, or click to browse. Nothing is uploaded.
- Adjust the options if you want; the defaults suit most files.
- Click Convert to OGG and wait a moment.
- Download the results individually or all at once as a ZIP.
Frequently asked questions
Does MP3 to OGG lose quality?
Both formats are lossy, so re-encoding loses a little. Keep the quality at q6 or higher and you will not hear the difference.
Why do games prefer OGG?
Vorbis has no encoder padding, so looping music restarts seamlessly, and the format is royalty-free, which is why most engines ship a Vorbis decoder and not an MP3 one.
Is this Opus or Vorbis?
Vorbis, the widely supported codec that every engine and player understands.
Is this really free?
Yes. The site is supported by ads, and there are no limits on how many files you convert.
Are my files uploaded anywhere?
No. The converter runs entirely in your browser. Files stay on your device, which also makes it faster than upload-based converters for anything larger than a few megabytes.
Is there a file size limit?
The only limit is your device's memory. Images and audio of any normal size are fine; for video, files under about 500 MB work well on most laptops and phones.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox, and Safari on desktop and mobile. Very old browsers without WebAssembly support will not work.