Free AVI to MP4 Converter

This AVI to MP4 converter turns older AVI video files into the modern, more efficient MP4 format, powered by Notie. AVI files are often large and less compatible with modern devices and platforms, so converting to MP4 makes sharing and playback much easier. Everything runs online, with no software installation needed.

Try It Free

Free to start · No credit card required · Works on iPhone & Android

How to use the avi to mp4 converter

Upload your AVI file

Add the AVI video file you want to convert.

AI converts the format

Notie converts your video into the modern, widely supported MP4 format.

Download your MP4

Save the converted file, ready to upload, share, or edit anywhere.

Why use Notie's avi to mp4 converter

Free to use

Convert your first AVI files to MP4 at no cost, with no watermark.

Smaller file sizes

MP4 is generally more efficient than AVI, often resulting in a smaller file for the same quality.

Universal compatibility

MP4 plays reliably across phones, computers, and nearly every video platform.

Works on any device

Convert AVI to MP4 from your phone, tablet, or desktop browser.

AVI to MP4 Converter FAQs

Why is AVI less convenient than MP4?

AVI files are often larger and less consistently supported by modern browsers, phones, and social platforms, while MP4 has become the near-universal standard.

Will converting AVI to MP4 shrink the file size?

Often yes, since MP4 generally compresses video more efficiently than AVI, though the exact result depends on your original file's settings.

Can I compress the MP4 further after converting?

Yes, use our MP4 file compressor tool if you need an even smaller file size after conversion.

Is there a limit to how large an AVI file I can convert?

Notie handles most everyday AVI file sizes without issue; very large files simply take a little longer to process through the online video converter.

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