Converting OGG to AAC re-encodes between two lossy codecs, producing audio compatible with Apple devices, streaming services, and MP4 video containers. AAC matches or beats Vorbis at similar bitrates and plays on hardware Vorbis can't.
Drag & drop audio files here, or browse
Drop your OGG files here
Transcoding between lossy codecs adds a small quality hit. Keep the AAC bitrate at or above the OGG's bitrate to minimize it. Starting from the original source would always produce a cleaner AAC. Use the OGG only when that's not available.
AAC runs on iOS, macOS, Windows, Android, all browsers, game consoles, and smart speakers. It's the default codec for MP4 video audio tracks.
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.
AAC is the successor the MPEG group designed to replace MP3. At 128 kbps it typically sounds as good as MP3 at 192 kbps. It's the default codec for YouTube audio, iTunes purchases, Apple Music, and nearly every streaming service that isn't using Opus or Vorbis.
In compatibility, yes. AAC plays on more hardware. In raw audio quality at the same bitrate, they're close enough that most listeners can't tell them apart on typical gear.
Match the OGG's bitrate, or go slightly higher. A 160 kbps OGG encodes cleanly to 160–192 kbps AAC with minimal audible difference.
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.
AAC is the successor the MPEG group designed to replace MP3. At 128 kbps it typically sounds as good as MP3 at 192 kbps. It's the default codec for YouTube audio, iTunes purchases, Apple Music, and nearly every streaming service that isn't using Opus or Vorbis.
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.