01
ADD YOUR AAC
Drop the AAC file into the box above or choose it from your device.
AAC → FLAC / online converter
AAC to FLAC Converter
Put an AAC file into FLAC for players or libraries that require FLAC.
01 / how to
How to convert AAC to FLAC
02
CONVERT TO FLAC
FLAC is already selected. Press Convert and wait a few seconds.
03
DOWNLOAD
Save the finished FLAC file. The original is deleted from our server.
02 / what you get
What happens to your data
Kept
- Raw AAC (ADTS) streams with the .aac extension are supported
- Saved as FLAC, which keeps the audio exactly as decoded, in a file usually about half the size of WAV
- Sample rate, channels and 24-bit depth are kept
Good to know
- Raw AAC files carry no title, artist or album tags, so there is nothing to copy over.
- The source is already compressed with quality loss. FLAC keeps it exactly as it is, it does not bring back what was lost, and the file gets much bigger.
03 / formats
AAC vs FLAC
AAC
An AAC file is a compressed audio format similar to MP3 but with better sound quality at the same bitrate. It's the standard for streaming audio, YouTube, and most modern devices' default recordings.
Used in: Streaming audio · YouTube · Modern device recordings
FLAC
A FLAC file compresses audio without losing any quality (lossless) — smaller than WAV, but still identical to the original when played back. The go-to format for audiophiles and music archiving.
Used in: Music archiving · Audiophile listening · High-quality downloads
04 / more
More conversions
Have a different file? Open the main converter — it detects the format for you.