Convert aac to ogg
Converted on your device. Files never leave this tab. Output tops out around 2 GB.
Nothing is uploaded
The converter runs inside this page. Cut your network after it loads and it still works.
No account, no daily limit
No sign-up, no daily limit, no watermark, no queue behind other people's files. Batch as many AAC files as you like.
Real OGG output
Encoded by ffmpeg, the same library the command-line tools use — not a renamed extension.
About AAC
Advanced Audio Coding
The lossy codec standardized in MPEG-2 and MPEG-4 as a successor to MP3, generally sounding better at the same bitrate. A .aac file is a bare ADTS stream without the MPEG-4 container an M4A has. Use it for players and streaming tools that want a raw AAC stream; for a music library, M4A holds the same audio with better tagging.
About OGG
Ogg Vorbis
Ogg is an open container from the Xiph.Org Foundation, and .ogg files usually hold Vorbis, a royalty-free lossy audio codec. Use it for games and open-source software that prefer a patent-free lossy format.