Convert MP3 to OGG
Convert MP3 files to OGG Vorbis format instantly in your browser. OGG delivers better audio quality at the same file size — ideal for games, Linux systems, and open-source projects. No upload needed.
Drag 'n' drop files here, or
click to select files
.mp3
Drop your files and click Convert to get OGG
//when_to_use
When to Convert MP3 to OGG
- Preparing game audio assets for a Godot or Unity project that natively uses OGG Vorbis for sound effects and music
- Converting a background music MP3 to OGG for embedding in an HTML5 web game on itch.io
- Uploading audio clips to Wikipedia, which requires OGG format for all audio media
- Building an open-source Linux application that requires royalty-free OGG audio instead of patent-encumbered MP3
- Reducing music library size on a Linux desktop by switching from MP3 to higher-efficiency OGG Vorbis encoding
//comparison
MP3 vs OGG
| Property | MP3 | OGG |
|---|---|---|
| Compression | LAME MP3 (lossy) | Vorbis (lossy, open) |
| Typical file size (4 min song) | 3-5 MB | 3-5 MB |
| Quality at same bitrate | Baseline | ~10-15% better |
| iPhone/iOS support | Native | Requires VLC |
| Game engine support | With plugin | Native (Godot, Unity) |
| Royalty-free | No (Fraunhofer patent history) | Yes |
//how_it_works
How It Works
Drop your MP3 files
Drag and drop or select MP3 audio files. Any bitrate or stereo/mono configuration is supported. First use loads FFmpeg WASM (~30MB).
FFmpeg decodes MP3
FFmpeg WASM uses the libmpg123 decoder to parse the MP3 frames and decode them to raw PCM audio samples. Everything stays local in your browser.
Vorbis encoding at quality level 6
The libvorbis encoder compresses the PCM at quality level 6 (~192kbps VBR equivalent) using overlapping MDCT with psychoacoustic masking for maximum transparency.
Download OGG files
Your OGG Vorbis files are ready for game engines, web apps, Linux systems, or any open-source project that prefers royalty-free audio.
// under the hood
MP3 uses Huffman coding over Modified Discrete Cosine Transform (MDCT) sub-bands with the LAME psychoacoustic model. OGG Vorbis uses overlapping MDCT windows with a more sophisticated psychoacoustic masking model that typically delivers better quality-per-bit. Our converter uses FFmpeg WASM to decode the MP3 stream via libmp3lame and re-encode with the libvorbis encoder at quality level 6 (approximately 160-192kbps VBR). All processing runs in your browser via WebAssembly.
//faq
Frequently Asked Questions
- What is OGG Vorbis format?
- OGG is a free, open-source container format, and Vorbis is the audio codec inside it. Together (OGG Vorbis) they provide lossy audio compression that outperforms MP3 at equivalent bitrates. OGG is the native audio format for many Linux distributions, the Godot and Unity game engines, and open-source media players like VLC.
- Why convert MP3 to OGG?
- OGG Vorbis achieves better perceptual audio quality than MP3 at the same file size due to its more advanced psychoacoustic model. Developers choose OGG for game audio assets because it's royalty-free and natively supported in HTML5 browsers and game engines. It's also the required or preferred format for uploads to Wikipedia and certain Linux applications.
- Will I lose quality converting MP3 to OGG?
- Both MP3 and OGG Vorbis are lossy formats. Transcoding from one lossy format to another introduces a small additional quality loss because both encoding stages discard audio information. We encode at OGG quality level 6 (~192kbps equivalent) to minimize this. If you have lossless originals (WAV, FLAC), convert from those instead for best results.
- Does OGG play on iPhone or Android?
- Android supports OGG natively. iPhone and iOS do not support OGG playback without a third-party app like VLC. If you need cross-device compatibility, MP3 or AAC are better choices. OGG is best for web apps, games, Linux, and open-source projects where you control the playback environment.
- Is OGG supported in HTML5 browsers?
- Yes — Chrome, Firefox, and Opera support OGG Vorbis natively in the HTML5 <audio> element. Safari and older Edge do not. For maximum browser compatibility in web projects, either provide both OGG and MP3 versions or use the WebM container with Vorbis audio.
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