How do I convert AVI to MP4?

Upload your AVI file using the box above, confirm MP4 as the output format, then select Convert. The converted file is ready to download as soon as processing finishes — usually in a few seconds.

Is converting AVI to MP4 free?

Yes, and there is nothing to sign up for. Every conversion is free, there is no paid tier, and the limits are the same for everyone.

Will the quality change when converting to MP4?

MP4 uses lossy compression, so some data is discarded to keep the file small. The default quality setting is tuned to be visually or audibly transparent for most material, and you can raise it in the conversion settings.

What happens to my file afterwards?

The uploaded file is deleted as soon as the conversion completes, and the converted file is removed automatically once its retention window ends. Download links are signed and expire within minutes.

avimp4

Convert AVI to MP4

Free online converter for AVI files. H.264/AAC video that plays on virtually any device. Nothing to install, no watermark, and every file is deleted automatically.

Drag and drop your files

Upload a AVI file to convert it to MP4. Up to 200 files at once, 10 GB each.

Free · up to 200 files · 10 GB each · files deleted automatically after 168 hours.

About AVI and MP4

AVI

Legacy container with broad desktop support.

video/x-msvideo

MP4

H.264/AAC video that plays on virtually any device.

video/mp4

Other AVI conversions

avi to webm
avi to mkv
avi to mov
avi to gif
avi to mp3
avi to wav
avi to flac
avi to ogg

Other ways to get MP4

webm to mp4
mkv to mp4
mov to mp4
gif to mp4