Convert AVI to MP4
Free, fast AVI-to-MP4 conversion.
Video and audio are processed with ffmpeg in your browser — large files are slow and use a lot of memory. Keep files under a few hundred MB for best results.
About the AVI and MP4 formats
AVI. AVI is a legacy Microsoft video container with broad but dated support.
MP4. MP4 is the most widely-supported video container, ideal for sharing and streaming.
Frequently asked questions
How do I convert AVI to MP4?
Drop your AVI files into the box above and click Convert. The MP4 file is generated instantly and ready to download.
Will the quality stay the same?
MP4 keeps full quality, so your converted file looks identical to the original.
Is AVI to MP4 conversion free?
Completely free, with no sign-up, watermarks or file-size paywalls.