Convert MP3 to OGG
To convert MP3 to OGG, drop your .mp3 onto this page and click the button to encode OGG Vorbis right in the browser. The transcode runs as ffmpeg WebAssembly on your own machine, so the audio is never uploaded to a server to be converted.
Runs in your browser. Your file never leaves your device.Drop your MP3 hereChoose a MP3 to convert
It becomes a OGG right in your browser, up to 200 MB
Your file never leaves your device
Works in airplane mode. See the proof
Limits, published exactly
| Where it runs | In your browser. The file never leaves your device. |
|---|---|
| Free conversions | Unlimited. No account, no ads, no queue, no watermark. |
| Max file size, free | 200 MB |
Why convert MP3 to OGG?
The usual driver is game development or open-source work. Unity, Unreal and Godot all favor OGG Vorbis, and so do plenty of open-source apps and asset pipelines, because OGG is open and royalty-free and sidesteps MP3's old patent baggage and the engine-support quirks that come with it. If you have sound effects, music loops or voice clips sitting in MP3 and a game engine or project that wants OGG, this conversion is how you get them into the right format without dragging a desktop audio tool into your build. It is a practical format swap aimed squarely at developers, not a listening upgrade.
What is MP3?
MP3 is the audio format that ate the world in the late 1990s, and it remains the most universally supported way to store sound: lossy compression at roughly a tenth of CD size, playable on literally anything with a speaker. Newer codecs like AAC and Opus beat it on quality per kilobyte, but no format comes close to its compatibility across car stereos, ancient MP3 players, browsers, editing software and upload forms.
What is OGG?
OGG is the Xiph.Org container, in practice almost always carrying Vorbis-compressed audio: the open, royalty-free alternative that game engines, Wikipedia and open-source tooling adopted in the 2000s. Quality per kilobyte is solid, but device support never caught up to MP3, so .ogg files regularly need converting before they play in cars, on older hardware or inside picky upload forms.
Quality and what to expect
This is a lossy-to-lossy transcode, so be clear-eyed: the MP3 already dropped detail, and re-encoding to OGG Vorbis (here at roughly 128 kbps quality) lays a second generation of loss on top, which the OGG cannot undo. For game sound effects, loops and voice that is almost always fine, since the material is short and rarely scrutinized on studio monitors, but a music track meant for close listening would be better encoded from a lossless source if you have one. The output is Vorbis inside an Ogg container, which every major engine decodes natively. Length, sample rate and channels are preserved, and ID3 metadata is not carried across.
MP3 to OGG FAQ
Why do game engines prefer OGG over MP3?
OGG Vorbis is open and royalty-free, so engines like Unity, Unreal and Godot dodge MP3's patent baggage and ship solid native decoding for it. For sound effects and loops it is the path-of-least-resistance format.
Does converting to OGG improve the audio?
No. It is lossy-to-lossy, so the OGG inherits the MP3's loss and adds a touch more at the encoding quality used here. For game audio that is fine; for critical music, start from a lossless original if you can.
Is my audio sent anywhere to be converted?
No. The MP3 is decoded and the OGG written by ffmpeg WebAssembly inside your browser, on your CPU. You could go offline after the page loads and the conversion would still finish, which is proof enough.
Will the OGG file just work in my engine?
In Unity, Unreal and Godot, yes: all three import Ogg Vorbis natively, which is the whole reason for this pair. Drop the resulting .ogg into your project the way you would any other audio asset.