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WorkinTool Free Online AVI to MP4 Converter--Convert AVI to MP4 Online Free

Turn AVI into MP4 without losing quality online for free. Get multiple converted MP4 videos concurrently in a flash.
File Size Limit: 10 MB.
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How to Convert AVI to MP4 Online for FREE

Step 1
Click on the green + icon to import your AVI video(s).
Step 2
Press the blue Convert icon to start your conversion.
Step 3
Hit Download to export your converted MP4 file(s).

Failed to convert AVI to MP4 over 1GB or 2GB?

Please download WorkinTool Video Editor for unlimited conversion to figure it out.

What is AVI?

AVI stands for Audio Video Interleave, a multimedia container format developed by Microsoft in the early 1990s. It is a commonly used format known for its ability to support multiple audio and video streams, which allows for the creation of movies with multiple audio tracks and subtitles. Although AVI can be played by many media players and video editing software, it is an older format and has limitations in terms of file size and compatibility with newer devices.

What is MP4?

MP4 is a digital multimedia file format developed by the Moving Picture Experts Group (MPEG), which stores video, audio, and other types of media content. It is a widely used file format for sharing and streaming video content over the internet and is supported by a wide range of devices and media players, including smartphones, tablets, computers, and smart TVs. MP4 files can also support other codecs and features, such as subtitles, multiple audio tracks, and chapter markers, making it a versatile and popular format for multimedia content distribution.

AVI or MP4, which one is better?

Features AVI MP4 Conclusion
Quality As AVI saves alpha channels, a video file exported in AVI can boast excellent quality. MP4 usually adopts various compression codecs for encoding, so its output quality can also be guaranteed at an excellent level. AVI would be slightly better than MP4 in quality.
File Size AVI adopts traditional video compression algorithms like DivX or XviD codecs. MP4 typically uses more advanced video compression algorithms than AVI, like H264/MPEG-4, HEVC, MPEG-1, VP8, VP9, etc. MP4 is smaller than AVI
Compatibility AVI video file format is less compatible. AVI files with different compression standards must be performed in line with the matched decompression algorithms. MP4 is more compatible with different platforms and devices. It is an industry-wide standard for Windows, Mac, Linux, iOS, and Android systems. MP4 boasts stronger compatibility.

More than just AVI to MP4 Conversion

Key Features of WorkinTool Free Online AVI to MP4 Converter

Easy to Use
Easy to Use
WorkinTool boasts a user-friendly interface, making it easier to convert .avi to .mp4 online.
Fast-Speed Conversion
Fast-Speed Conversion
Get your output instantly when your internet connection is stable.
Perfect Compression
Perfect Compression
WorkinTool offers the perfect video format conversion. After your conversion with this AVI converter, you will expect the most suitable MP4 without quality loss.
Free to Use
Free to Use
WorkinTool provides a completely free service for AVI to MP4 conversion. You don't need to pay anything to convert your AVI files within its limitations.
Data Protected
Data Protected
File security is entirely guaranteed. To protect your data privacy, all uploaded files will be automatically deleted within 24 hours.
Totally Online
Totally Online
With internet access, you can visit this free online AVI to MP4 converter without the need to download and install the software. It works on all devices and platforms, including Windows, Mac, iPhone and Android.

Desktop Software VS Online Tool

Desktop Software
Free Download For Win 11/10/8/7
User-friendly and easy to use
No need to upload files to the Internet
Unlimited conversions (no file size/number limit)
More video formats supported
Custom audio/video settings
Faster conversion speed
Better output quality
Batch conversion available
No internet access required
Online Tool
Explore Now
Total web-based operations without the need to download
No update hassle and system requirements to worry about
All imported files to be removed within 24 hours
File size limit--10 MB
No custom audio/video settings

AVI to MP4 Converter

Start Your Free Trial Now!
Intend to convert larger or more AVI files? Please download our powerful desktop software for a better AVI conversion experience. Now, get started with our FREE plan to enjoy additional valuable video editing features and have a chance to make your job easier.
Free Download For Win 11/10/8/7