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Convert AAC to FLAC
Convert AAC to FLAC format — 100% browser-based, no upload required.
2 cores · low tier
Drop a file here or click to select
Format will be auto-detected
About these formats
Source
AAC
Advanced Audio CodingSuccessor to MP3 with better quality at lower bitrates. Default audio for Apple devices, YouTube, and most streaming services.
Best for
StreamingApple devicesMobile audioYouTube
Advantages
- + Better than MP3 per bitrate
- + Streaming optimized
- + Apple/YouTube standard
Limitations
- − Patent-encumbered
- − Slightly less universal than MP3
Target
FLAC
Free Lossless Audio CodecLossless audio compression reducing file size by ~50% while preserving perfect audio quality. Ideal for music archival.
Best for
Music archivalAudiophile collectionsLossless backupsHi-Fi audio
Advantages
- + Perfect quality
- + ~50% smaller than WAV
- + Open source
- + Metadata support
Limitations
- − Larger than MP3
- − Limited portable device support