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11 best free AVI to MP4 converters

Edited by Ben Jacklin
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Have a bunch of AVI files that you want to convert to MP4? In this article, we discuss how to change the video format to MP4 using Movavi Video Converter, online services, and freeware.

Program

OS

Best for

Download

Windows, Mac

Fast conversion and simple editing

Windows, Mac, Linux, iOS, Android

Converting and playing video files

Windows

Converting 4K videos

Here’s what Movavi’s team does to provide you with verified information:

  • All the products covered in this article have been tested by our team.

  • When testing, we compare key characteristics, including supported input and output formats, quality loss when converting, and other significant features.

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How to convert AVI to MP4 for free

The next option to change the format of your videos is to convert AVI to MP4 for free using a desktop program. Finding good freeware may be a difficult task since there are a lot of potentially harmful apps out there. Another issue is the limited functionality of these converters. Our list of free AVI-to-MP4 converters will help you choose the perfect app for your needs. Use the links below to get to the review you want to read.

1. Movavi Video Converter

Movavi Video Converter is a powerful tool that supports more than 180 media formats, including AVI and MP4. It offers the batch conversion option so you can convert multiple videos at once. Another feature worth mentioning is an instant file merging that lets you merge your videos without losing quality.

Follow the steps below to learn how to use Movavi’s AVI-to-MP4 converter for free.

Step 1. To download the converter, follow the link below.

Download Movavi Video Converter for Windows
Download Movavi Video Converter for Mac

After the installation file is downloaded, follow the instructions on your screen to finish the installation process. Launch the converter.

Step 2. To upload your files to the program, click the Add Media button, then – Add Video. Locate the videos you want to convert, then hit Open. Alternatively, you can drag and drop the files into the program window.

Step 3. Open the Video tab in the lower part of the program window. Click MP4 and select the appropriate preset. If you want to compress AVI to MP4, select the preset with the lower resolution.

Step 4. To change the output folder for the converted files, click the Save to button. Hit the Convert button to start converting AVI to MP4 on Windows or Mac. After the conversion is complete, the folder with your transformed files will open automatically.

Pros:

  • Very quick way to convert AVI files to MP4s

  • Cool editing tools

  • Extremely user-friendly interface

Cons:

  • Can’t convert files via URL

2. VLC

Another way to convert videos to MP4 is by using VLC. Even though VLC is a media player, it also has the ability to convert media files. The app is available for free and works well. Note that this option may not be suitable for beginners since the process of converting is a little bit complicated.

To know how to convert AVI to MP4 with VLC, check out this step-by-step guide.

Step 1. Download the program for your PC or Mac using the link below.

Download VLC

Install the media player following the on-screen instructions and launch it.

Step 2. Open the Media menu in the top left part of the program window and click Convert / Save. In the window that opens, click the Add button to upload your video to the program. Find the file on your hard drive and click Open. Next, click Convert / Save.

Step 3. Choose Video - H.264 + MP3 (MP4) from the Profile drop-down menu. If you want to change video or audio codecs, click the Wrench icon next to the Profile drop-down menu.

Step 4. Click the Browse button, select the output folder for the video, and enter a name for the file. To launch the conversion, hit the Start button.

Pros:

  • AVI-to-MP4 conversion freeware

  • Includes audio file conversion capabilities

Cons:

  • Some users report low conversion speeds

3. Freemake

With Freemake, you can easily convert your AVI file to MP4. The program has a simple user interface and converts videos pretty fast without any file size or length limitations. The converter has a couple of drawbacks, though: a watermark will be added to the transformed videos, and the app is only available for Windows.

Below you will find a short guide on how to convert AVI to MP4 on Windows 10.

Step 1. Get the converter by following the link below.

Download Freemake

Follow the instructions on your screen to complete the installation. Launch the program.

Step 2. To upload your videos to the converter, hit the Video button in the upper-left part of the program window. Locate your files and click Open.

Step 3. If you want to cut your video before the conversion, click the Scissors icon next to the file name, trim the video as needed, and hit OK.

Step 4. To select the target format, click the to MP4 button. In the window that opens, specify the saving settings: select the preset and the output folder. To start the conversion, hit the Convert button.

Pros:

  • Support for a lot of popular video file types

  • Easy conversions from AVI to MP4

Cons:

  • Free version includes a watermark and an intro clip

  • Only available for Windows

4. HandBrake

HandBrake is an open-source video editor available for popular platforms. One of the app’s advantages is that the conversion process can be customized – you can create your own presets with appropriate video and audio settings. It’s a great option for advanced users, however, beginners may find the app confusing and difficult to navigate.

To learn how to convert the AVI videos using Handbrake, read our short tutorial.

Step 1. Download the appropriate version of the AVI file converter from the HandBrake website.

Download HandBrake

Install the converter by following the on-screen instructions. After the installation is complete, run the program.

Step 2. Drag and drop your videos to the program window. Alternatively, you can click the Folder (Batch Scan) button if you’re converting multiple files or File to convert a single file.

Step 3. MP4 will be selected as a target format by default. If you want to change the video codec or frame rate, open the Video tab and specify the settings.

Step 4. To change the destination folder, click the Browse button in the lower-right part of the program window. Click the Start Encode button to launch the conversion.

Pros:

  • 100% free video converter option

  • No watermark on free video conversions

Cons:

  • Can be intimidating if you’re not a veteran video maker

How to convert AVI to MP4 online

One of the easiest ways to convert AVI to MP4 is to use an online converting service. If you don’t want to download and install any software on your computer, an online converter is a way to go. Below, you’ll find seven online converters we picked for you. Use the links below to navigate through the reviews.

5. Online Video Converter by Movavi

This handy tool allows you to change video, audio, and image formats on the fly, as well as their resolution and bitrate. Movavi's web app supports all popular video, audio, and image formats and has an unlimited number of conversions. However, it’s better to use a desktop converter for larger files due to the file size limit.

Step 1. Open the app in your browser

Go to the Online Video Converter page

Step 2. Click the Add Your Media button, find the file for conversion, and hit Open. Alternatively, you can add a file from Dropbox.

Step 3. Select the desired format from the list in the right part of the program interface. To change video resolution and audio quality, click the cogwheel icon.

Step 4. Start converting your file by hitting the Convert button.

Pros:

  • Supports all popular video, audio, and image formats

  • Free and easy to access

  • Fast and straightforward conversion

Cons:

  • Has a file size limit

6. CloudConvert

CloudConvert is a handy online AVI-to-MP4 converter that you can use for free. Before the conversion, this web service lets you select a video codec, a preset, a video resolution, as well as other settings. You can also add the subtitles for your video if needed. Note that the number of free conversions is limited to 25 per day, and the service also has a file size limit.

Step 1. Visit the CloudConvert website.

Proceed to the CloudConvert website

Step 2. To upload your media file to the website, click the Select File button, find your video, and hit Open. Alternatively, you can add a video by entering the video’s URL or upload a file from your cloud storage.

Step 3. If you want to specify the video settings, click the Wrench icon. To start converting your video, hit the Convert button.

Step 4. After the conversion is complete, a preview window will appear. You can check the converted video. To download the clip, click the Download button.

Pros:

  • Get extra security with encryption on every video

  • Convert from AVI to MP4 and 200 other file formats

Cons:

  • You’ll have to pay if you want to convert more than 25 videos in a day

7. Zamzar

With its simple interface, Zamzar is the perfect tool for beginners. It’s very easy to master, and it works relatively quickly, so you will get your converted video in a matter of minutes. The service has a couple of downsides: editing options are not available, and the file size is limited to 50 MB.

To change the format of your video with this AVI-to-MP4 converter online, follow the steps below.

Step 1. Go to the Zamzar website.

Proceed to the Zamzar website

Step 2. Click the Add Files button to upload your video. To add a video by entering the URL, click Select link under the Add Files button.

Step 3. To start the process, hit the Convert Now button. Wait until the conversion is complete and click the Download button to save the converted file on your computer.

Pros:

  • Super user-friendly for beginners

  • Pretty quick video conversion rates

Cons:

  • No video-editing tools

  • No video conversions over 50 MB with the free version

8. FreeConvert.com

With FreeConvert.com, you can easily transfer your video files into the desired format. It has a wide range of video and audio options for advanced users. For instance, the web service allows you to change the video aspect ratio and frame rate, cut the video, rotate or flip it, and also add subtitles. Keep in mind that the conversion service has restrictions: maximum file size is 1 GB, and the number of conversions per day is limited. If you want to remove these restrictions, you need to purchase a subscription.

To change the file format from AVI to MP4 with FreeConvert.com, follow these steps.

Step 1. Follow the link below to get to the website.

Proceed to FreeConvert.com

Step 2. Click the Choose Files button to locate your video for the conversion. Alternatively, you can upload your video from Google Drive or Dropbox or enter the video’s URL.

Step 3. If you need to change the video and audio settings, hit the Cogwheel icon, specify the settings, and click the Apply Settings button.

Step 4. To start converting AVI to MP4, hit the Convert to MP4 button. Once the conversion process is finished, click Download MP4 to save your video.

Pros:

  • Get 256-bit encryption on every video export

  • Convert to MP4 and 60 other common video file formats

Cons:

  • You’ll have to pay if you want to convert videos larger than 1 GB

9. Online-Convert.com

The next option to change AVI to MP4 online is to use Online-Convert.com. This service allows you to convert files fast as well as to apply some basic options, like changing a preset and screen size, cut and flip your video. As for the audio settings, you can select an audio channel and audio codec and also change audio quality. Note that the free plan has some restrictions: the maximum video size is 100 MB, you can convert up to 20 files per day, and the number of concurrent conversions is limited. If you want to remove these limitations, the service offers a few subscription plans.

To convert your AVI files to MP4 with Online-Convert.com, check out the short guide below.

Step 1. Go to the Online-Convert.com website.

Proceed to Online-Convert.com

Step 2. Drag and drop the video to the browser window. Or click the Choose Files button to upload your file. To upload the video from your Dropbox or Google Drive, click the corresponding links.

Step 3. If you want to change the saving settings, go to Video settings (optional) and Audio settings (optional) below. To launch the conversion, hit the Start conversion button. After the process is finished, the video will be downloaded automatically. You can also upload the converted file to your cloud storage or download it as a ZIP file.

Pros:

  • Very user-friendly for new video creators

  • Video conversions with no software download

  • Easy customization of output video size

Cons:

  • If you need to convert a video larger than 100 MB, you’ll need to pay or find a different solution

10. ConvertFiles

ConvertFiles is the next online conversion service on our list. It’s a free tool that is very easy to navigate. You only need to upload your file to the website and hit one button to start the conversion. Keep in mind that the service doesn’t provide any editing tools and advanced options. Additionally, the maximum file size is limited to 250 MB.

To learn how to use this AVI-to-MP4 video converter, follow these steps.

Step 1. Visit the ConvertFiles website.

Proceed to the ConvertFiles website

Step 2. Hit the Browse button to upload your file. Locate your video with the .avi extension and click Open.

Step 3. Check Send a download link to my email (optional) and enter your email if needed. To launch the conversion process, hit the Convert button.

Step 4. Once the conversion is complete, follow the Click here to go to the download page link and hit the Download Free button to save the file to your computer.

Pros:

  • Free, simple video converter

  • No download necessary

Cons:

  • Lacks video-editing capabilities

11. Convertio

Convertio is an online conversion tool available for free. It supports almost all popular media formats, including AVI and MP4. Before the conversion, the service allows you to cut your video, select the codec and frame rate, and resize and rotate the clip. Note that if you don’t have a paid subscription, Convertio has some limitations: the maximum file size is 100 MB, and you can convert up to 10 files per day.

Check out the short guide below to learn how to use Convertio.

Step 1. Go to the Convertio website.

Proceed to the Convertio website

Step 2. To upload your files, hit the Choose Files button. Or simply drag and drop the file into the browser window.

Step 3. Click the Cogwheel icon if you want to specify the advanced settings. To start converting your file, hit the Convert button.

Step 4. When the conversion is finished, click the Download button to save the file with the .mp4 extension to your computer.

Pros:

  • Easy online file conversions from AVI to MP4 and other formats

  • Customizable settings for output videos

Cons:

  • Major limitations on the free version

How to convert AVI to MP4 with Movavi Video Converter on Windows and Mac

The first option is to use Movavi Video Converter – a powerful and easy-to-use program that converts files fast thanks to the SuperSpeed mode. Download the appropriate version of the converter and follow the steps below to transform your AVI files to MP4.

Step 1. Install Movavi Video Converter

Download the installation file and install the app on your PC or Mac. Launch the program.

Step 2. Upload AVI files to the converter

To add your videos to the converter, click the Add Media button, and then – Add video. Find your files and hit Open. Or you can simply drag and drop the videos into the program window.

Step 3. Select the output format

To set MP4 as the target format, open the Video tab and click MP4. Then, choose a suitable preset for your files.

Step 4. Compress your files (optional)

If you want to compress AVI to MP4, set a higher compression rate for your videos. To do this, click the estimated output file size. In the pop-up window that opens, move the File size slider to set the desired value.

Step 5. Start the conversion

To specify the output folder, click the Save to button. Finally, hit Convert to start the conversion process.

How to choose the best AVI to MP4 converter

As the article shows, there are two main types of free converters – online and desktop. Let’s sum up their pros and cons.

Online converters can be a huge help when you want to convert a single media file or don’t want to waste time downloading and installing a desktop app on your computer. However, this option has some major drawbacks, too. Almost all online tools have a file size limit, so you won’t be able to convert a movie or any other large file. Another problem is that online services usually don’t support batch conversion and allow you to process only one file at a time. So if you want to transfer multiple files, it’ll take a lot of time to convert them all one by one.

Free desktop converters are a good option when you only convert files occasionally because the functionality of these apps is rather limited. But if you usually don’t use any advanced editing features and tools, it’s a good idea to give a free converter a try. Just make sure that the app you install isn’t malware and doesn’t pose a security risk to your computer.

  1. Movavi Video Converter – full video conversion package
  2. Online Video Converter by Movavi – best for changing format of a single file
  3. CloudConvert – best for users who want to create GIFs online
  4. Zamzar – best for small file sizes
  5. FreeConvert.com – best for adjusting audio parameters
  6. Online-convert.com – trimming and rotating a video
  7. ConvertFiles – suitable for cloud-based users
  8. Convertio – supports various formats
  9. VLC – playing and ripping media
  10. Freemake – best for converting 4K videos
  11. HandBrake – free ripping with lots of formats

AVI vs. MP4 comparison

AVI or MP4 – which one is better? Check out the information below to learn more about the differences between the video formats.

Comparison parameter

AVI

MP4

File extension

.avi

.mp4

Developed by

Microsoft

Moving Picture Experts Group

Description

AVI, also known as Audio Video Interleave, is a container format that stores both video and audio data. AVI uses less compression, which results in large file sizes.

MP4 is a multimedia container format that can store video, audio, and other content, like images and subtitles. The format uses a higher degree of compression than other formats, so MP4 files are usually small.

Frequently asked questions

▶️ How do I use Movavi's free AVI to MP4 converter?

▶️ How to convert AVI to MP4 on Windows 10?

▶️ How to solve the problem of an AVI file not playing on Windows?

▶️ Can I play AVI files on a Mac?

▶️ Which format has better quality – MP4 or AVI?

▶️ How can I convert AVI to MP4 on Android?

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