FLAC to AAC Converter

Convert FLAC files to AAC online, for free, with nothing to install.

To convert FLAC to AAC, select or drop your .flac file above, check that AAC is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.

What is a FLAC file?

FLAC – FLAC lossless audio. FLAC compresses audio to about half its size without losing anything: decoding gives back exactly what went in. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.

FLAC Converter →

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.

AAC Converter →

How to convert FLAC to AAC

  1. Click Select File, or drop your .flac files anywhere on this page. You can add several at once.
  2. Check that AAC is chosen as the output format. On this page it is picked for you.
  3. Click Convert. When a file has to go to our server, the button says Upload and convert instead.
  4. Click Download next to each file when it's done.

FLAC vs AAC: how they compare

FLACAAC
LayoutA stream of soundA stream of sound
EditableIn audio editorsIn audio editors
Created byXiph.Org, 2001MPEG, 1997
Best forKeeping music at full qualityMusic on phones and streaming

Good to know

  • The sound is decoded and written as an AAC file at a fixed quality (192 kbit/s).
  • Tags such as title and artist are kept where the new format has room for them. Only the first audio track is converted; pictures and video are left out.

Frequently asked questions

Is converting FLAC 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 FLAC files uploaded anywhere?

This conversion runs on our server, because converting audio needs 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.

How large can the FLAC file be?

Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.

Will the AAC look the same as the FLAC?

It sounds very close: the sound is encoded again as AAC at a fixed quality, so a little detail is lost, and tags such as title and artist are kept where AAC has room for them.

Can I convert several FLAC files at once?

Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.

How long does converting FLAC to AAC take?

In our tests a one-hour WAV recording became an M4A file in about 46 seconds. A song of a few minutes takes a few seconds, and most conversions cost a single credit.

Convert FLAC to other formats

Convert other files to AAC

All audio formats

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