How Can I Convert AVI to MP4 Online?

free AVI to MP4 Converter

Add AVI file(s) that you want to convert.


Select MP4 as the output format you want to convert AVI file(s) to.


Click CONVERT to convert your AVI file(s).


Click DOWNLOAD to save your converted MP4 file(s).

Differences Between Online and Desktop Converters

online avi converter
Online Converter
  • Long-time wait
  • Up to 100MB file size
  • Popular formats supported
  • A maximum of 2 files in one conversion
  • Slow conversion speed
fast avi converter
Faster Desktop Converter
  • 0 second wait
  • No size limits
  • 1000+ formats supported
  • Limitless batch conversion mode integrated
  • 30X faster than any converter

How to Convert AVI to MP4 or MP4 to AVI Easily

Have a number of AVI videos and unable to play them on your portable players or mobile devices? No need to worry as we have the best solutions to your problem. AVI- which stands for Audio Video Interleave is a file format developed by Microsoft for storing audio as well as video data in a single file. AVI files are large in size as they are less compressed in nature and thus difficult to open and play on a number of devices. Thus, to make these files compatible, convert AVI to MP4. There are a number of tools to help you with the task and Wondershare UniConverter (originally Wondershare Video Converter Ultimate) is among the top list. The AVI to MP4 video converter supports batch processing, video editing, quality conversion and other features while you change AVI to MP4. Supporting over 1000 file formats, it can also perform the reverse function of converting MP4 to AVI. So no matter whether you want solution on how to convert AVI to MP4, or how to convert MP4 to AVI, UniConverter is there for you.

Step 1: Launch Wondershare AVI to MP4 converter.

After Wondershare UniConverter is successfully downloaded and installed on your PC/Mac, launch it.

One-Stop Easy Solution to Convert, Edit, Burn Media Files and More.

Step 2: Load AVI files to the video converter.

From the Convert section on the main software interface, click +Add Files. The software will let you browse your PC to add the desired AVI files. You can add multiple files for quick batch processing. The drop down menu at +Add Files helps you add files directly from the connected device as well.

Add AVI files

Step 3: Customize, Edit, or Compress AVI Video (Optional).

If you want to add some effects, or customize your videos, the software has multiple functions like Trim, Crop, Cut, Apply Effects and others. The icons for these features are present under the thumbnail of the video that is added. If you want to compress video, you could click the Compress icon to preset the video parameters. If you don’t need to edit videos, skip to the next step.

Customize or Edit AVI Video

Step 4: Select MP4 as Output format.

Click the inverted triangle next to the Convert all files to: option on the top-right corner. A new window will open from where select the Video tab. Next, select MP4 and its desired output resolution.

Click +Create Custom to open a new window for changing file parameters like frame rate, bit rate, resolution and others. Make the needed changes and hit Create.

Select Output Format as MP4

Step 5: Change AVI to MP4.

Finally, click Convert All to move ahead with the file conversion from AVI to MP4 format. At the Output tab, the location on PC where you want to save the converted file can be edited.

Change AVI to MP4

To change MP4 to AVI, load MP4 files at step 2 and select AVI format at step 4. Rest of the steps remains the same.

Considering the ease of use, and quick quality conversion, UniConverter is the best AVI to MP4 converter. The MP4 to AVI converter free download is available from the official software website.

FAQs About AVI to MP4 Conversion

AVI to MP4

Using Online UniConverter (originally, it's easy to convert AVI files to a variety of other formats.

Convert AVI to WMV (Windows Media Video)

Convert AVI to MOV (QuickTime File Format)

Convert AVI to MP3 (MP3 Audio Format)

Convert AVI to MKV (Matroska Multimedia Container)

Convert AVI to 3GP (Third Generation Partnership Project)

Convert AVI to WEBM (WEB Media)

Convert AVI to WAV (Waveform Audio File Format)

Convert AVI to FLV (Flash Video)

convert AVI to MPEG (Moving Picture Experts Group)

Other Useful Conversions You May Concern:

MKV to MP4

WebM to MP4

AVI to MP4

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