This free online AAC to AIFF converter lets you change aac audio files into aiff audio format right inside your web browser. There is nothing to install, no account to create and no watermark added to your result.
Unlike most converters, EverythingConverter never uploads your files to a server. The entire AAC to AIFF conversion happens locally on your own device, which means your documents and media stay completely private and the process works even on slow connections.
How to convert AAC to AIFF
- Click the upload area above or drag and drop your AAC file into it. You can also browse and pick a file from your device.
- EverythingConverter reads the file directly in your browser and starts to convert it to AIFF automatically. Nothing is sent to any server.
- When the conversion finishes, your new AIFF file downloads right away. You can convert another file at any time, completely free.
AAC and AIFF explained
What is a AAC file?
AAC is the lossy audio format used by Apple Music, YouTube and most streaming services. It generally sounds better than MP3 at the same bitrate.
What is a AIFF file?
AIFF is an uncompressed, lossless audio format developed by Apple. Like WAV, it stores studio quality sound in large files and is common in professional audio on Mac.
Convert AAC to AIFF on any device
You can convert AAC to AIFF on Windows, Mac, Linux, Chromebook, Android and iPhone, straight from Chrome, Safari, Edge or Firefox. There is no app to install and no account to create. Because the conversion runs on your own device, it also works offline once the page has loaded, and you can convert as many files as you want.
Frequently asked questions
How do I convert AAC to AIFF for free?
Upload your AAC file to the converter above and it will be turned into a AIFF file automatically. The tool is completely free, with no limits on how many files you can convert and no watermark on the result.
Is it safe to convert AAC to AIFF here?
Yes. EverythingConverter converts your AAC file entirely inside your browser. Your file is never uploaded to a server, so no one but you ever has access to it. This makes it one of the most private ways to convert AAC to AIFF online.
Can I convert multiple AAC files at once?
Yes. You can drop or select as many AAC files as you like and they are all converted to AIFF in one batch, then bundled into a single ZIP download. It is the fastest way to bulk convert AAC to AIFF.
Do I need to install any software?
No. The AAC to AIFF converter runs in any modern web browser on Windows, macOS, Linux, Android and iOS. There is nothing to download or install.
Is there a file size limit?
Because the conversion runs on your own device, the practical limit depends on your computer's memory rather than a server quota. Most everyday AAC files convert instantly, and there is no artificial cap.
How long does it take to convert AAC to AIFF?
For typical files it is almost instant, since the conversion happens locally with no upload or download wait. Large media files take a little longer because your device does the encoding, but there is never a queue.
What is the difference between AAC and AIFF?
AAC is the lossy audio format used by Apple Music, YouTube and most streaming services. It generally sounds better than MP3 at the same bitrate. AIFF is an uncompressed, lossless audio format developed by Apple. Like WAV, it stores studio quality sound in large files and is common in professional audio on Mac. Converting AAC to AIFF gives you the strengths of the AIFF format for your specific use case.
Will converting AAC to AIFF improve quality?
Converting from a compressed format like AAC to AIFF cannot add detail that was already lost, but it will not degrade the file any further. AIFF preserves exactly what is in your AAC file.