Convert AVI to MP4
AVI to MP4 converter: upload, click convert, download the result. Free, no watermarks, no account. Small files convert inside your browser (never uploaded). Larger ones go to our server and disappear automatically after a few minutes. Hit "Delete now" to wipe them instantly after download.
How to convert
- Pick your AVI file - drag it onto the dropzone or click to choose.
- The target format MP4 is already selected.
- Hit Convert and wait a few seconds. Larger files take longer.
- Download the result. Press Delete now to wipe the server copy immediately.
When to use it
- Social media uploads - MOV / MKV / AVI → MP4 (universal everywhere).
- Web - MP4 → WebM for lighter in-browser loading.
- GIF clips - MP4 → GIF for memes and tutorials.
- Extract audio - MP4 / MKV → MP3 / WAV.
- AVI → MP4 - the most common reason for this pair.
Frequently asked questions
AVI is the 90s Microsoft container — fine in its day but lacks streaming support, modern subtitles and efficient seeking. MP4 streams over the web, plays on phones and uses better codec containers. Convert AVI to MP4 to give old clips a modern wrapper.