How do I convert MP4 to AVI online for free?

Video Conversion

Convert MP4 to AVI Online

Free online MP4 Video to AVI Video converter. Files are processed locally in your browser — no uploads, 100% private.

.MP4

.AVI

Drop your .MP4 file here

or click to browse from your device

Accepts .MP4 files

100% Private

Files never leave your device

Instant

In-browser processing

No Account

No sign-up required

How to Convert MP4 to AVI Online

1Upload your .MP4 file using the drop zone above or click to browse
2Your file converts automatically to .AVI format entirely within your browser
3Download your converted file — no account or email needed

Frequently Asked Questions

Upload your MP4 Video file using the drop zone above. Your file is instantly converted to AVI Video format right inside your browser using client-side processing — no account, no software, and no cost. When conversion is complete, click Download to save your AVI file.

Completely. Our converter runs 100% in your browser using local processing, so your MP4 file never leaves your device or touches any external server. We do not store, access, or transmit your files at any point.

Desktop: up to 500 MB. Mobile: up to 200 MB. All processing happens locally in your browser — your files are never uploaded to any server.