AAC to FLAC Converter
Convert AAC to FLAC online for free — no signup, no watermark, instant download.
Drag & drop files here
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Max 100MB per file · Up to 10 files
About this tool
Free AAC to FLAC Converter — No Signup, No Watermark
FlipFileZone lets you convert AAC audio files to FLAC entirely in your browser — no software to install, no account required, and no watermark on the output. The converter runs on our servers so even low-powered devices can handle large files. Your files are automatically deleted after download, keeping your data private.
How to use — step by step
Upload your AAC audio file
Click the upload area or drag and drop your AAC file. You can add multiple files at once for batch conversion.
FLAC is pre-selected
The converter automatically selects FLAC as the output format. Switch to any other format using the dropdown if needed.
Click Convert
Hit the Convert button. Your audio file is processed securely on our servers in seconds.
Download your file
Download your FLAC file immediately once conversion is complete. Files are deleted from our servers right after.
Other formats you can convert AAC to
Features
Fast conversion
Convert AAC to FLAC in seconds — server-side processing, no waiting.
No signup required
Start converting immediately. No account, no email address, no credit card.
No watermark
Your FLAC output files are clean — we never add branding or watermarks.
Private & secure
Files are transferred over HTTPS and automatically deleted after download.
Batch conversion
Upload and convert multiple files at the same time — download them all as a ZIP.
Works on any device
Runs in any modern browser on Windows, Mac, Linux, iOS and Android.
Frequently asked questions
Is the AAC to FLAC converter free?
Yes — FlipFileZone is 100% free with no account required, no credits, and no hidden charges.
Is there a file size limit for AAC to FLAC conversion?
There is no hard file size limit. Very large files may take slightly longer depending on your internet speed.
Can I convert multiple AAC files to FLAC at once?
Yes. Drop multiple AAC files into the converter and they will all be converted simultaneously. You can then download everything as a single ZIP.
Does the AAC to FLAC conversion affect quality?
You can choose the output bitrate and sample rate before converting to control file size vs quality.
Are my files kept private?
Your files are uploaded over an encrypted HTTPS connection and automatically deleted from our servers after you download them. We do not store, analyse or share your files.