Convert FLAC to AAC
Upload a FLAC file and convert it to AAC — all in your browser.
Upload a FLAC file and convert it to AAC — all in your browser.
Your lossless FLAC is decoded and re-encoded with AAC, the codec used by YouTube, Apple Music, and most streaming services. At the same bitrate, AAC generally sounds better than MP3, so you get smaller files with less compromise.
The output is a raw .aac stream in ADTS form. That is exactly what some streaming and broadcast tools want, but it is a bare stream: .aac files have no standard place for album art or tags.
If you want AAC audio for everyday listening, M4A is usually the better wrapper. It holds the same AAC audio inside an MP4 container that supports titles, artists, and cover art, and it is what iTunes and Apple devices expect. Use the FLAC to M4A converter for that.
Choose raw .aac when a tool or pipeline specifically asks for an ADTS stream, for example some HLS and broadcast workflows.
At the same bitrate, AAC usually preserves more detail, particularly at lower bitrates. MP3 still wins on universal hardware support.
Raw .aac files in ADTS form have no standard tag container, so there is nowhere to put them. Convert to M4A instead if you need metadata.
No. The whole conversion runs in your browser. Nothing is uploaded anywhere.