AVI to MP4 Converter

AVI is an old Windows format with large file sizes. Convert to MP4 for a much smaller, universally compatible video file.

🔒 No upload ⚡ Instant ✓ Free ∞ No size limit

Drop your AVI file here

or click to browse — converts instantly to MP4

No upload · Instant · 100% private

Why convert AVI to MP4?

AVI is an old Windows format with large file sizes. Convert to MP4 for a much smaller, universally compatible video file.

Filesmith runs entirely in your browser using WebAssembly. Your files are never uploaded to any server — conversion happens locally on your device, instantly and privately.

Accepts: MP4, WEBM, MOV, MKV, AVI, FLV