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AC3 to FLAC converter

Convert AC3 to FLAC online from any device with a free converter.

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About Audio converter

Convert AC3 to FLAC files online with our free audio converter app. No matter your platform — Windows 10, Mac or iPhone — you can convert AC3 audio files with any bitrate rapidly.

Popular audio formats include MP3, AAC, WAV, and FLAC. MP3 and AAC are widely used for streaming and portable devices due to their compressed size, while WAV and FLAC offer higher sound quality, often used in professional audio work. Leading platforms for audio playback and distribution include Spotify, Apple Music, YouTube Music, and SoundCloud.

Simply change AC3 to FLAC by uploading your file, choosing a target format, and clicking Convert. Your file will be ready to download instantly. No registration required.

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AC3

AC3 file format

AC3 (Audio Codec 3) is a digital audio compression format developed by Dolby Laboratories, commonly used for surround sound in DVDs, Blu-ray discs, and broadcast media. It is supported by media players like VLC, Windows Media Player, and editing tools such as Audacity and Adobe Audition. The format uses perceptual coding to reduce file size while maintaining high-quality audio, supporting up to 5.1-channel surround sound and offering features like dynamic range compression and metadata for playback customization.

FLAC

Free Lossless Audio Codec

FLAC (Free Lossless Audio Codec) is an open-source audio format designed for lossless compression, preserving original audio quality while reducing file size. It is widely supported by media players like VLC, Foobar2000, and streaming platforms such as Tidal, and can be created or converted using tools like Audacity or XLD. FLAC files use metadata tagging (e.g., ID3, Vorbis comments) and support high-resolution audio, multichannel audio, and optional error-checking for data integrity.

How it works

How to convert AC3 to FLAC

Step 1
Click inside the file drop area to upload AC3 file or drag & drop AC3 file.
Step 2
Click on Convert button. Your AC3 files will be uploaded and converted to FLAC result format.
Step 3
Download link of result files will be available instantly after conversion.
Step 4
You can also send a link to the FLAC file to your email address.
FAQ

Questions & Answers

Other Supported Conversions

You can also convert AC3 into many other file formats. Please see the complete list below.

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