Convert MP3 to OGG
OGG Vorbis is free of patents and generally sounds better than MP3 at the same bitrate — which is why game engines and open-source projects prefer it.
Audio only · up to 10 files · 100 MB each — those numbers protect your memory, not our server
Getting the converter ready — this happens once, then your browser keeps it.
The converter could not start.
The engine files are missing from — copy ffmpeg-core.js and ffmpeg-core.wasm there.
Almost always a mismatched build: the worker is an ES module, so the core has to be the esm one too. Copy ffmpeg-core.js and .wasm from @ffmpeg/core/dist/esm/, not dist/umd/.
not in this build of the converter, so it is not offered.
What you lose
A generation. Re-compressing already-compressed audio always costs something, however good the second codec is.
What you do not gain
A slightly smaller file at comparable quality, and a format with no licensing questions attached. Not better audio than the MP3 you started with.
What it does to the size
Approximate, for stereo audio at the settings this tool uses by default. The real figure moves with the material — silence and speech compress far better than a full mix.
When this is the right conversion
Godot, Unity, a web project, or anywhere the licence of the codec is part of the decision.
Other conversions
This tool is free because dbelo is a library of sound effects, and we would rather you found us this way than not at all.
Browse the sound library