AAC Converter
Convert AAC audio files to MP3, WAV, OGG, FLAC, M4A and Opus and 7 more formats — free, in batches, files up to 10 GB, with no sign-up and no watermark.
Drop your AAC file
Choose the format you need
Download the result
Choose file
or drag & drop — audio or video files
Free · Unlimited · No sign-up · Max 10 GB
Your privacy is our mission. Most files are converted right in your browser and never leave your device. Only large files, or formats a browser cannot process, are sent to our server over an encrypted connection — they are never stored, never shared, and deleted as soon as your download is ready.
What Is an AAC File?
AAC is the successor to MP3 and the audio codec of YouTube, Apple Music and most streaming video. At the same bitrate it keeps more detail than MP3. AAC is a lossy format: it makes files small by discarding detail that is hard to notice. Converting it to another format cannot bring that detail back.
AAC Facts
| Full name | Advanced Audio Coding |
|---|---|
| File extension | .aac |
| Type | Audio |
| How it stores data | Lossy compression |
| Created by | MPEG (Fraunhofer, Dolby, Sony, AT&T), 1997 |
| Best for | streaming, mobile audio, soundtracks of MP4 video |
| Watch out | a raw .aac file carries no tags or chapters — M4A is the friendlier container |
| Opens with | VLC, Apple Music, Windows Media Player, Android, every browser |
How to Open an AAC File
A .aac file opens with VLC, Apple Music, Windows Media Player, Android, every browser. If none of those is at hand — or the file has to go into a program, device or website that refuses AAC — convert it: MP3, WAV and OGG are the usual choices.
Convert AAC to Another Format
Convert Other Formats to AAC
AAC Compared
Frequently Asked Questions
What is an AAC file?
AAC is the successor to MP3 and the audio codec of YouTube, Apple Music and most streaming video. At the same bitrate it keeps more detail than MP3.
How do I open a .aac file?
With VLC, Apple Music, Windows Media Player, Android, every browser. If your device or program does not accept it, convert the file to a format it does.
How do I convert an AAC file?
Drop the file into the converter on this page, choose the target format — MP3, WAV, OGG, FLAC and M4A and others — and press Convert. It is free, there is no account and several files can be converted at once.
Is AAC lossy or lossless?
AAC is a lossy format: it makes files small by discarding detail that is hard to notice. Converting it to another format cannot bring that detail back.
What is AAC good for, and what are its limits?
Best for: streaming, mobile audio, soundtracks of MP4 video. Watch out: a raw .aac file carries no tags or chapters — M4A is the friendlier container.
Is the AAC converter free, and how big can the files be?
It is free, with no account, no watermark and no daily limit. Files can be up to 10 GB each.
Which formats can be converted to AAC?
MP3, WAV, OGG, FLAC, M4A, ALAC, AIFF, AMR, AC3, AU, CAF and GSM and 16 more.