Converting OGG to M4A re-encodes through AAC and wraps the output in an MPEG-4 container for Apple-friendly playback with proper metadata. It's how you get OGG audio into iTunes, Apple Music, or an iPhone without manual re-tagging.
Drag & drop audio files here, or browse
Drop your OGG files here
Lossy-to-lossy transcode; expect a small quality hit. Matching the OGG's bitrate or going slightly higher keeps the result close to the source. You gain Apple ecosystem compatibility, proper tagging, and chapter marker support.
M4A plays on all Apple devices, Android (since 3.0), Windows (iTunes, VLC, Groove), and modern browsers. Older car stereos may not support it.
OGG Vorbis is a royalty-free lossy codec developed by Xiph.Org. At comparable bitrates it sounds cleaner than MP3, especially at 96 kbps and below, and it's the audio format used by Spotify's streams, most modern games, and open-source projects that want to avoid patent encumbrances.
M4A is an MPEG-4 container that almost always holds AAC audio (though it can hold ALAC too). The payload is identical to what's inside an .aac file; the difference is that M4A carries proper tags, chapter markers, and cover art. iTunes, Apple Music, and iOS write M4A by default.
Raw .aac (ADTS) files don't handle metadata well. M4A is the same AAC audio inside an MP4 container that supports proper tags, artwork, and chapters. For anything more than a streaming buffer, use M4A.
The common fields (artist, album, title, track number, artwork) map directly to M4A tags. Edge-case Vorbis comments may not translate one-to-one.
OGG Vorbis is a royalty-free lossy codec developed by Xiph.Org. At comparable bitrates it sounds cleaner than MP3, especially at 96 kbps and below, and it's the audio format used by Spotify's streams, most modern games, and open-source projects that want to avoid patent encumbrances.
M4A is an MPEG-4 container that almost always holds AAC audio (though it can hold ALAC too). The payload is identical to what's inside an .aac file; the difference is that M4A carries proper tags, chapter markers, and cover art. iTunes, Apple Music, and iOS write M4A by default.
Yes. The converter runs entirely in your browser using FFmpeg compiled to WebAssembly. Your audio files are never uploaded, never sent to a server, and never leave your device.
There's no hard limit, but because everything runs in your browser you're bounded by available memory. Files over about 2 GB total can get slow or hit browser memory limits. Process in smaller batches if you run into issues.