Convert AVI to MP4
Convert AVI to MP4 online, free — no installation, no sign-up.
or drop files here to convert AVI → MP4
Max file size 1 GB. Browser-side conversions have no upload limit.
How to convert AVI to MP4
Add your file
Drop your AVI file above or click Choose Files.
Convert
Your file is converted instantly in your browser — it never gets uploaded.
Download
Grab your new MP4 file — done.
What is AVI?
AVI is a classic Microsoft video container with broad legacy support.
What is MP4?
MP4 is the most widely supported video container, playable virtually everywhere.
Frequently asked questions
Drop your AVI file into the box above (or click Choose Files), then click Convert and download your new MP4 file. No account or software needed.
Yes — this converter is completely free with no watermarks and no sign-up.
Absolutely. This conversion runs entirely inside your browser, so your AVI file never leaves your device.
You control the output. Use the advanced options (the gear icon) to set quality, and we preserve as much fidelity as the MP4 format allows.