Convert OGG to AAC online

Your OGG file is converted to AAC right here in your browser, using FFmpeg compiled to WebAssembly. Nothing is uploaded to us, the audio never leaves your device. Quality is preserved and the download is ready in seconds.

What is an OGG file?

OGG is an open, royalty-free container, most commonly carrying Vorbis-encoded audio. It was built as the free-software answer to MP3 and delivers comparable or better quality at the same bitrate.

OGG shows up in games, open-source software and some Android recording apps. Older iPhones famously could not play it, which is the usual reason people need to convert one.

Why AAC?

AAC (Advanced Audio Coding) is MP3's designed successor: at the same bitrate it preserves noticeably more detail, especially at the low bitrates where MP3 falls apart. It is the audio inside YouTube videos, M4A files and most streaming services.

Convert to AAC when you want the best lossy quality-per-megabyte with near-universal modern support. It beats MP3 at every bitrate and every current device plays it. OGG's practical weakness is device support: Apple devices only gained reliable playback recently, and plenty of players and upload forms still reject it.

Frequently asked questions

Will converting OGG to AAC lose quality?

A small, one-time generational loss is unavoidable. Both OGG and AAC are lossy, so re-encoding discards a little more detail. The converter uses high-quality settings to keep it inaudible for speech, but if you still have the original uncompressed source, converting from that instead is always better.

Is it free?

Yes, completely, with no account and no watermark. The conversion runs on your own device, so it costs us nothing to let you use it. The only limit is file size: up to 50 MB, which is what a browser can hold in memory comfortably.

Do I need to install anything, or upload my file?

Neither. It runs entirely in your browser using FFmpeg compiled to WebAssembly. Your audio is never sent to us, which is also why it works on a slow connection, only the page downloads, not your file.

Need a transcript of the audio?

Autrans also transcribes audio in Nigerian English, Pidgin, Yoruba, Hausa, Igbo, French, and Spanish.