Convert AVI to MP4 Online

About This Conversion

AVI is an older format with large file sizes and limited compatibility. Convert AVI to MP4 for better compression, wider device support, and smoother streaming.

Why Convert AVI to MP4?

Compatibility: MP4 works on more devices and platforms.

File Size: Often results in smaller files without noticeable quality loss.

Editing: MP4 is easier to edit with most video software.

Sharing: Upload to social media, email, or cloud storage with fewer issues.

🔒 Privacy First

All processing happens locally in your browser. Your files never leave your computer.

How to Convert AVI to MP4

Drag & drop your AVI file into the area above.
Verify that the target format is set to MP4 (it should be pre‑selected).
Click “Convert Video” and wait a few seconds while FFmpeg processes the file.
Download your converted MP4 file—ready to use.

Frequently Asked Questions

Is this conversion free?

Yes, 100% free. No hidden fees, no trial limits.

Are my files uploaded to a server?

No. The entire conversion runs inside your browser using WebAssembly. Your data stays on your machine.

What are the supported file sizes?

You can convert files up to several gigabytes, as long as your browser has enough memory. For best performance, we recommend files under 1 GB.

Can I convert multiple files at once?

Currently, the tool processes one file at a time. You can queue files by converting them sequentially.