AC3 to FLAC Converter

Batch convert ac3 files to flac online. Change ac3 to flac on Windows, Mac, iPhone and Android in 2 clicks.

Select files for conversion or drag and drop them to the upload area.
Your files are securely protected and available only to you.
All files are automatically deleted from our servers after 1 hour.

How to convert AC3 files to FLAC online?

Step-by-step instructions for converting ac3 files to flac

Upload AC3-file

Click "Choose File" button to select a ac3 file on your computer. AC3 file size can be up to 100 Mb.

Convert AC3 to FLAC

Click "Convert" button to start conversion.

Download your FLAC

When the conversion process is complete, you can download the FLAC file.


  • ❓ How can I convert AC3 to FLAC?
    First you need to add file for conversion: drag and drop your AC3 file or click the "Choose File" button. Then click the "Convert" button. When AC3 to FLAC conversion is completed, you can download your FLAC file.
  • ⏱️ How long does it take to convert AC3 to FLAC?
    Audio conversion is pretty fast. You can change AC3 to FLAC in a few seconds.
  • 🛡️ Is it safe to convert AC3 to FLAC on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including AC3 to FLAC) is absolutely safe.
  • 💻 Can I convert AC3 to FLAC on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our AC3 to FLAC converter works online and does not require software installation.

Information about AC3 and FLAC file formats

Full name Audio Coding 3 FLAC - Free Lossless Audio Codec
File extension .ac3 .flac
MIME type audio/ac3, audio/vnd.dolby.dd-raw, audio/x-ac3 audio/x-flac
Developed by Dolby Digital Xiph.Org Foundation
Type of format Music File Audio
Description AC3 is an audio file specifically developed by Dolby Digital to provide surround sound audio. The format is used for audio on many DVDs and Blu-Ray media. For the file to be correctly decoded and output, a DVD player with a Dolby Digital compatible home cinema system is required. It became the de facto standard for surround sound and has held that position since its inception in 1992, with it coming to home cinema in 1995. FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio and is also the name of the reference codec implementation. Digital audio compressed by FLAC's algorithm can typically be reduced to 50-60% of its original size and decompress to an identical copy of the original audio data.
Technical details AC3 allows for separate audio to be defined for each of the six speakers in the classic cinema and home cinema setup. This produces the effect of surround sound on the person listening to the audio file. The six channels consist of right front, center, left front, rear right, rear left, and a subwoofer. The technical strengths of FLAC compared to other lossless formats lie in its ability to be streamed and decoded quickly, independent of compression level. Compared to compressed audio formats, FFmpeg's FLAC implementation was noted to have the fastest and most efficient embedded decoder of any modern lossless audio format.
File conversion AC3 conversion FLAC conversion
Associated programs QuickTime Player, VLC Media Player, Windows Media Player Windows 10, Android, Blackberry 10 and Jolla devices.
AC3 to FLAC conversion quality rating:
4.3 (1278 votes)
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