Most people meet AAC inside an M4A file, but encoders and video tools also produce raw AAC files with the plain .aac extension, and those are even less welcome in an audio editor. This free aac to aiff converter decodes a raw AAC file and rewrites it as an uncompressed AIFF, so the audio can be trimmed, faded and mixed like any studio file. Everything runs in your browser, so your file is never uploaded and no signup is needed. The honest limits: the AIFF output is 16-bit PCM, and detail already discarded by AAC compression does not come back.
How to use this aac to aiff converter
From a raw AAC stream to an edit-ready AIFF.
Choose a .aac file, from an encoder output, a video tool or a conversion leftover.
Decoding and AIFF writing happen on your own device, so nothing is uploaded.
Save the uncompressed file and open it in your editor.
Why this aac to aiff converter rescues raw AAC files
Raw AAC is an encoder output, not an editing format. AIFF fixes that.
A bare .aac file is hard to place on a timeline. As AIFF, the same audio imports and edits normally.
Once uncompressed, trims and fades no longer stack another compression round onto AAC audio.
The decoded sample rate and channel layout are carried into the 16-bit PCM AIFF.
Project audio is converted on your own device and never uploaded.
AAC to AIFF Converter FAQs
Short, direct answers to the questions readers ask most.
AAC is the compressed audio format; M4A is a container that usually holds AAC audio. This tool handles the raw .aac file, while the M4A converter handles the container version.
No. AAC compression already discarded detail, and that detail cannot be recovered. The AIFF only preserves what the AAC still contains.
Because it is uncompressed. Every sample is stored in full, which is what makes the file easy to edit.
The tool shows a plain error instead of producing a broken file. Try another browser or re-export the audio from its source app.
Yes. It runs entirely in your browser, with no account, no signup and nothing uploaded.
Related Tools
More free converters that work the same way — right in your browser.
Turn an M4A track into an uncompressed AIFF for editing, in your browser.
MP3 to AIFF ConverterTurn an MP3 into an uncompressed AIFF for editing, in your browser.
OGG to AIFF ConverterTurn an OGG track into an uncompressed AIFF for editing, in your browser.
AAC to MP3 ConverterConvert an AAC track into a widely playable MP3, in your browser.
Try the related tools above, or go back to the Convertion homepage for more free converters.
