AAC to FLAC Converter
Convert AAC audio to FLAC.
How to use AAC to FLAC
Three quick steps — no sign-up needed
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Step 1
Upload your file
Choose a AAC audio file from your device. Drag and drop works too.
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Step 2
Convert
Run the conversion to produce FLAC audio without installing desktop software.
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Step 3
Download
Save the FLAC file and use it in players, editors, or uploads that expect that format.
About AAC to FLAC
AAC to FLAC converts AAC audio to FLAC in the browser so you can fix format mismatches without a desktop suite.
Upload the AAC file, start the conversion, and download the FLAC result. The tool is built for everyday swaps - podcasts, voice notes, music clips, and short recordings - where you need a compatible file fast rather than a full DAW project.
Use AAC to FLAC when a platform asks for FLAC, when an editor opens FLAC more reliably, or when you are standardising a folder of clips before sharing. Files are processed for the conversion job and are not kept as a permanent library on our servers.
Example workflow
Use AAC to FLAC when your player, editor or upload form requires FLAC rather than AAC. Re-encoding can change file size and quality. A lossless output cannot restore details already lost in a compressed source.
Output checks and limits
Accepted inputs: AAC. The current processing duration limit is 30 minutes. The upload size shown for your plan also applies; codec compatibility and processing time can still limit a job. Check playback, duration and sound in the downloaded file before deleting the original.
Benefits of AAC to FLAC
Frequently asked questions
What does AAC to FLAC do?
It converts an uploaded AAC audio file into FLAC so you can use the clip where that format is required.
Do I need software to convert AAC to FLAC?
No. Upload the file in your browser, convert, and download the result.
Will quality change?
Re-encoding can change size and fidelity depending on the codecs involved. Use a lossless target like WAV or FLAC when you need maximum fidelity.
Is there a file size limit?
Yes - the upload limit shown on the tool page applies. Larger files may need a shorter clip or a higher plan limit if available.