MP3 to OGG Converter
Convert MP3 to OGG free — no upload, no signup
To convert MP3 to OGG, drop your MP3 audio files into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. Ogg Vorbis is royalty-free and popular for games.
Drop audio files here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
Advanced
How to convert MP3 to OGG
Add your MP3 files
Drag and drop MP3 files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Pick a bitrate
192 kbps suits music and 128 kbps or less suits speech. Sample rate and mono/stereo are under Advanced.
Convert and download
Click Convert, then download each OGG file or all of them as one ZIP.
Why convert MP3 to OGG?
Game engines such as Godot and many open-source apps prefer OGG Vorbis audio.
What happens when you convert MP3 to OGG?
The MP3 is re-encoded to Vorbis at 192 kbps by default, giving a similar file size.
How does Fylo convert MP3 to OGG?
Fylo decodes the MP3 audio in the MP3 with ffmpeg compiled to WebAssembly and encodes it with the Vorbis encoder (libvorbis) at 192 kbps in an Ogg container. Both formats are lossy, so each conversion discards a little detail — start from the highest-bitrate MP3 you have. A 3-minute song is ≈ 4.3 MB at 192 kbps as MP3 and ≈ 3.6 MB at 160 kbps as OGG. The original sample rate and channel layout are kept unless you change them under Advanced.
What's the difference between MP3 and OGG?
MP3 (MPEG-1 Audio Layer III) was developed largely at Germany's Fraunhofer Institute and standardised in 1993. It removes sounds the ear is unlikely to notice — a technique called perceptual coding — so a 3-minute song takes about 4 MB at 192 kbps instead of about 32 MB as WAV. The last MP3 patents expired in 2017, so it's now free to use.
Ogg is an open container from the Xiph.Org Foundation; Vorbis, the audio codec most .ogg files use, reached version 1.0 in 2002. Vorbis was created as a free, unpatented alternative to MP3 and sounds better at the same bitrate.
Learn more: MP3 format guide · OGG format guide
| Property | MP3 | OGG |
|---|---|---|
| Compression | Lossy | Lossy (Vorbis) |
| Typical bitrate | 128–320 kbps | 96–320 kbps |
| 3-minute song | ≈ 4.3 MB at 192 kbps | ≈ 3.6 MB at 160 kbps |
| Tags and cover art | Yes (ID3) | Yes (Vorbis comments) |
| Compatibility | Universal | Android, Chrome, Firefox, games; limited on Apple |
| Best for | Music and podcasts on any device | Games, open-source projects, web audio |
| Introduced | 1993 | 2002 |
Frequently asked questions
Does Unity or Godot use OGG?
Godot imports OGG natively, and Unity accepts it too.
Will quality drop?
Slightly, as with any lossy-to-lossy conversion; 192 kbps keeps it inaudible for most listeners.
Is my MP3 file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your MP3 file is read directly from your device and never sent anywhere.
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