Skip to content
Daily Solutions

AVI to MP4 Converter

AVI is an old Windows video format that phones and many platforms don’t handle well. Convert AVI to MP4 to play it anywhere and to make the file smaller – free and private, in your browser.

Files are processed in your browser and are not uploaded to our server. Privacy

How to use the AVI to MP4

  1. Add your .avi video.
  2. MP4 is preselected. Choose a quality.
  3. Press “Convert” and download.

Smaller files with MP4

Old AVI files often use outdated codecs and are large. Converting to MP4 with H.264 usually makes them noticeably smaller at the same visual quality, which helps when uploading or sharing.

How the converter works

Conversion runs in your browser with FFmpeg (WebAssembly), so your file is not uploaded. The first conversion downloads the converter engine (about 30 MB) once; files up to 500 MB are supported.

Frequently asked questions

Will my AVI lose quality?

Choose “High” to keep the video visually the same as the original.

Can I upload the MP4 to YouTube?

Yes. MP4 with H.264 and AAC is YouTube’s recommended format.

Related tools

Next step

Convert MKV videos to compatible MP4.

Open MKV to MP4