MiniTool Video Converter (a feature-rich free file converter) releases this post to recommend three robust file converters. Shows you how to convert M4A to AC3 and vice versa step by step.
An Online Method to Convert M4A to AC3
Considering that some of you may want an online converter to get AC3 from M4A, I have written this section here. Next, I will recommend an online M4A to AC3 converter named Convertio and provide you with an in-depth conversion guide.
About Convertio
Convertio is an easy-to-use online M4A to AC3 converter with an intuitive interface. With it, you can transform M4A into AC3 without downloading and installing any applications or plug-ins. Meanwhile, Convertio also supports other audio formats such as M4R, MP3, WAV, OGG, and more. In addition, it allows you to import your M4A files from many sources, like your PC, Google Drive, and Dropbox.
How to Convert M4A to AC3 with Convertio
Below are the detailed steps to convert M4A to AC3 using Convertio.
Step 1. Go to https://convertio.co/m4a-ac3/.
Step 2. Upload your M4A files by clicking on the Choose Files button.

Step 3. Start the conversion process by clicking on the Convert button.

Step 4. Once the file conversion is over, download and check your converted files.
Admittedly, Convertio is a fantastic file converter. It has a total file size limit of 100 MB. If you want to break that limit, you need to sign up.
An Offline Method to Convert M4A to AC3
Is there any offline method that enables you to convert M4A to AC3? The answer is positive. In the following paragraphs, I will walk you through a fabulous offline file converter called MiniTool Video Converter. At the same time, I will show you how to convert your M4A files with this tool step by step.
What MiniTool Video Converter
MiniTool Video Converter is not only an audio converter but also a video conversion tool. It supports a multitude of formats, including MP4, MOV, WMV, MKV, AVI, MP3, AIFF, WAV, WMA, and so on. In addition, MiniTool Video Converter has a well-organized interface and can be easily accessed by novices.
Moreover, MiniTool Video Converter allows you to convert up to five files simultaneously and for free. Plus, this program, offering a lot of advanced options, enables you to change many parameters of the output files. Specifically, these parameters include the encoder, frame rate, sample rate, bitrate, audio channel, bitrate, and resolution.
How to Convert M4A to AC3 with MiniTool Video Converter
In this part, you will learn how to convert M4A to AC3 with MiniTool Video Converter.
Step 1. Download and Install MiniTool Video Converter on Your PC.
MiniTool Video ConverterClick to Download100%Clean & Safe
Download MiniTool Video Converter by clicking on the download button above. Then, follow the on-screen prompts to install the application on your computer.
Step 2. Upload your M4A Files to MiniTool Video Converter and Choose AC3 as the Output Format.
After launching MiniTool Video Converter, import your M4A files by clicking on the Add Files button.

Expand the Convert all files to option to enter the output format window. Then, switch to the Audio tab and select AC3. Next, choose the quality that you want.

Step 3. Choose a Saving Path for the Target Files and Begin the File Conversion.
Expand the Output option to determine where your converted files will be saved.

Begin the conversion tasks by clicking on the Convert or Convert All button.

Step 4. Check the Converted Results.
After the conversion is completed, this file converter will automatically switch to the Converted section. Next, click on the Open button to locate and check the converted files.
Undoubtedly, MiniTool Video Converter is a can’t-miss M4A to AC3 converter for you. More importantly, unlike some online converters, it never has a file size limit, which means that you can use MiniTool Video Converter to convert as many files as possible. In addition, it is also an AC3 to M4A converter.
How to Convert AC3 to M4A
If you want to convert AC3 to M4A, the following instructions can do you a favor.
Step 1. Go to https://cloudconvert.com/ac3-to-m4a.
Step 2. Click on Select File to upload your AC3 files.

Step 3. Click on the Convert button to begin the conversion process.

Step 4. After the conversion is completed, download and check the converted files.
With the above-detailed steps, it will never be difficult for you to get M4A from AC3.
To Wrap Things Up
Both Convertio and CloudConvert provide you with an online method to convert M4A to AC3 and vice versa. If you like an offline file converter more, try MiniTool Video Converter.
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