All-in-One Video Converter

Wondershare UniConverter

  • Best online AVI to MP4 converters alternative to convert MP4 to AVI and other 1000+ video formats.
  • Edit AVI videos before converting with trimming, cropping, watermarks, effects, etc.
  • 30X faster conversion speed than any conventional converters.
  • Download videos from 10000+ video sharing sites and convert to MP4.
  • Versatile toolbox combines with Screen Recorder, Video Compressor, Fix Video Metadata, etc.
convert AVI to MP4

6 Practical Free Online AVI to MP4 Converters

by Christine Smith • 2020-10-28 18:56:49 • Proven solutions

Are you looking for an online AVI to MP4 converter? You are right here! This article will recommend you 5 practical free online AVI to MP4 video converters. All of them are easy and simple to use. Also, you will find an advanced and powerful desktop video converter as the online AVI to MP4 alternative so that you can convert videos in batch without any Internet limitation. Just read below to get more information.

Part 1. Top 5 online AVI to MP4 converter

If you do not want to install desktop software to convert AVI to MP4, Download the top 5 online AVI to MP4 converter can help you a lot. Let's learn how to convert AVI to MP4 online free and more other features as below.

  1. Online UniConverter (originally
  2. Zamzar Video Converter
  3. Apowersoft Video Converter
  5. Convertfiles Video Converter

1. Online UniConverter(originally

Online UniConverter (originally is a user-friendly online AVI to MP4 converter for free. You can convert 2 AVI files MP4 at one time with no more than 100MB size. Meanwhile, you can convert AVI files to MOV, YouTube, and more formats as you wish. This free online video converter has fast converting speed and high-quality output file, you can save the files to Dropbox easily and quickly. Follow the simple steps below to convert AVI to MP4 online.

free online AVI to MP4 converter

Step 1: Open Online UniConverter or enter the into your browser. You can see a small window which says Drag & Drop or Hit to Add file. Click here to add your AVI files to convert online.

Step 2: Then select MP4 or other formats you want from the dropdown list of Convert all files to. Both video and audio formats can be converted here.

Step 3: Click on the CONVERT button to start converting AVI to MP4 online. You can download or save the video to Dropbox soon after the conversion process.

2. Zamzar Video Converter

Zamzar Converter is also another must-have online AVI to MP4 video converter. To convert files online with this AVI to MP4 converter, you just need 4 steps. Add files less than 100 MB to the online converter, select MP4 or other target file format, and then enter your email address and convert AVI to MP4. The conversion process is a little slow. When doing the conversion, you can put it away to do other things.

Zamar - online video converter

3. Apowersoft Video Converter

This is absolutely a free online AVI to MP4 converter. 21 output formats are there to satisfy your needs. You can personalize your video and audio settings. For example, the resolution ranges from 144p to 1080p, and the bit rate varies from 256kbps to 8000kbps. If you are converting a larger size of the file, it might take some time. But it's never a test of patience. While if it is a small one, it converts at high speed.

Apowersoft Video Converte - online AVI to MP4 converter


It is very easy to convert AVI to MP4 online with Online Convert. It supports the most common video formats, including AVI, MOV, MKV, FLV, 3GP, and others, to convert to MP4. You can drop your AVI videos to the website directly or paste the URL to download and convert it to MP4 format. The converted files can be downloaded or saved to the Dropbox and GoogleDrive as your needs. You can upload no more than 100 MB file size once a time, and for a bigger size file, you can buy the subscription service.

online convert - free online AVI to MP4 converter

5. Convertfiles Video Converter

It is at the highest speed compared with all the other 4 converters. It has 2 ways to let you convert AVI to MP4. You can just upload your file or enter the copy link in the blank box. After conversion, you just click the download link to download your converted file.

Convertfiles Video Converter - free AVI to MP4 converter

Watch Video Tutorial to Learn the Top 5 Online AVI to MP4 Converters

Part 2. Online AVI to MP4 Converter Alternative - Wondershare UniConverter

Unlike all the online AVI to MP4 video converters below, Wondershare UniConverter (originally Wondershare Video Converter Ultimate) is a desktop solution. With this video converter, there will be no format limitations. It supports almost all input and output videos. The downside of this AVI to MP4 converter lies in that you first need to download and install it. However, after installation, you can click the software icon and try it at ease without Internet access.

Wondershare UniConverter logo Wondershare UniConverter - Your Complete Video Toolbox

video converter ultimate
  • Convert AVI to MP4 and other 1000+ video formats with super fast speed and high-quality output.
  • Convert video to optimized preset for almost all devices like iPhone/iPad/Android phones.
  • 30X faster conversion speed.
  • Edit AVI files before conversion with trimming, cropping, rotating, adding watermarks, etc.
  • Transfer converted MP4 files from PC/Mac to mobile devices via a USB cable.
  • Burn AVI/MP4 videos to playable DVD with attractive free DVD menu templates.
  • Download videos from YouTube and convert them to AVI/MP4 format easily.
  • Versatile toolbox includes fixing video metadata, GIF maker, video compressor, and screen recorder.
  • Supported OS: Windows 10/8/7/XP/Vista, macOS 11 Big Sur, 10.15 (Catalina), 10.14, 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6.
security download Security Verified, 5,481,347 people have downloaded it.

Steps on How to Convert AVI to MP4 with Wondershare UniConverter

Step 1 Add AVI videos to Wondershare AVI to MP4 converter.

You can click on the +Add Files options to look for an AVI file on your computer that you wish to convert.

add AVI files to the AVI to MP4 converter

Step 2 Select the MP4 options.

Now click on the dropdown menu in the Output Format section and choose the MP4.

choose MP4 format for AVI to MP4 conversion

Step 3 Start converting AVI to MP4.

Click on the Start All button to transform the AVI videos to MP4; when it's finished, you will see the finished section's output files.


There are multiple useful ways to convert AVI to MP4 online; all of them are easy to use and can help you solve the problem without any hassle. But the recommended video converter is provided by Wondershare as it offers total solutions to convert videos online free(Online UniConverter) and on Mac/Windows without quality loss(Wondershare UniConverter).

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