Convert AVI to MP4 Online
Modernize your video files. Convert AVI to standard MP4 format for playback on all devices and web browsers.
Upload AVI Video
AVI files up to 500MB
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Supported formats: video/x-msvideo, video/avi
Max file size: 500 MB
Why Convert AVI to MP4?
MP4 is simple, efficient, and universally supported. Converting AVI to MP4 ensures your videos play smoothly on any device.
Works Everywhere
MP4 is the native format for iPhone, Android, and web browsers. No more "format not supported" errors.
Smaller Size
MP4 uses advanced compression (H.264/AAC) to significantly reduce file size while maintaining excellent quality.
Fast & Free
Convert unlimited files for free. Our optimized cloud servers handle the heavy lifting.
Frequently Asked Questions
Why convert AVI to MP4?
MP4 is the most widely supported video format. It works on all smartphones, tablets, TVs, and web browsers, whereas AVI is often not supported on Apple devices or web players.
Will the file size change?
Yes, MP4 is generally more efficient than AVI, so you'll often see a reduction in file size without noticeable quality loss.
Is it free?
Yes, our converter is 100% free with no registration required.