Convert to AAC

Convert audio and video files to AAC online, for free, with nothing to install.

MP4, MOV, MKV, AVI and 42 other audio or video file formats can be converted to AAC: drop your files above, and AAC is already chosen as the output. Files are converted on our server and deleted 72 hours later.

What is an AAC file?

AAC – AAC audio. AAC is the successor of MP3: it sounds better at the same size. A bare .aac file is a stream of AAC frames; the usual home of AAC is the M4A file. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.

How to convert audio or video files to AAC

  1. Click Select File, or drop your audio or video files anywhere on this page. Any of the 46 supported formats works.
  2. AAC is already chosen as the output on this page.
  3. Click Convert, then Download when it's done.

AAC at a glance

AAC
LayoutA stream of sound
EditableIn audio editors
Created byMPEG, 1997
Best forMusic on phones and streaming

Frequently asked questions

Why convert to AAC?

AAC is the successor of MP3: it sounds better at the same size. A bare .aac file is a stream of AAC frames; the usual home of AAC is the M4A file. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost. Best for: Music on phones and streaming.

Which audio or video file formats can be converted to AAC?

GIF, WEBP, 3G2, 3GP, 3GPP, AC3, AIF, AIFC, AIFF, AMR, AU, AVI, CAF, DV, DVR, FLAC, FLV, M2TS, M4A, M4B, M4V, MKV, MOD, MOV, MP3, MP4, MPEG, MPG, MTS, MXF, OGA, OGG, OGV, OPUS, RM, RMVB, SWF, TS, VOB, VOC, WAV, WEBA, WEBM, WMA, WMV, DAT.

Is converting to AAC free?

Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.

Are my audio or video files uploaded anywhere?

These conversions run on our server, because they need ffmpeg, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.

Convert to AAC from

All audio formats

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