This tool converts AAC to AC3 completely free and without any functional limitations. Since it is based on the browser API, the processing speed is the fastest because all files are processed locally on your device and are not uploaded to our server.
Batch Convert AAC to AC3 Online
With this SoConvert tool, you can convert multiple AAC files to AC3 directly in your browser for free. You can also adjust the audio Bitrate during conversion.
Click the Options button in the top-right corner to open the settings panel, where you can customize the output AC3 audio Bitrate.
Other Settings Explained:
Encoding Speed: Choose the encoding speed. Faster speeds result in larger file sizes.
Audio Bitrate: Recommended range is 8 – 320 Kbps.
Cut Audio: Trim the audio using a start and end time in HH:MM:SS format.
For example, setting 00:00:05 to 00:00:08 will cut a 3-second clip from the audio.
Before converting, you can choose a local folder to save the converted AC3 files. Once an AAC file is successfully converted, it will be automatically saved to your selected directory—no manual download required.
Save All: After all AAC files are converted, click “Save All” to export every AC3 file to your chosen folder in one go.
About AAC files
AAC (Advanced Audio Coding) is a highly efficient audio compression format developed by Fraunhofer IIS, AT&T, Dolby, and others. It delivers better sound quality than MP3 at similar bitrates, making it ideal for music streaming, podcasts, and mobile devices. AAC is the default audio format for Apple products (iTunes, iPods, iPhones) and is widely supported across platforms. Its lossy compression reduces file sizes significantly while maintaining excellent audio fidelity, though it's not as universally compatible as MP3.
About AC3 files
AC3 (Audio Coding 3), also known as Dolby Digital, is a multi-channel audio compression format developed by Dolby Laboratories. It efficiently reduces file size while maintaining high sound quality, supporting up to 6 channels (5.1 surround sound). AC3 is widely used in DVDs, Blu-rays, digital TV broadcasts, and home theaters. Though a lossy format, it delivers excellent audio performance for entertainment purposes, though not suitable for professional audio mastering due to its compression.
