Convert AVI to MP4
AVI video → MP4 video: convert online for free. AVI to MP4 conversion runs right in your browser — your files never leave your device.
Drop files here or choose them
You can also paste files with Ctrl+V
Files never leave your device
About the formats
- AVI video
- Legacy Microsoft video container from the 1990s, often with DivX or Xvid. Many phones and TVs no longer play it.
- MP4 video
- Common video container, usually with H.264 video and AAC audio. Plays almost everywhere.
How to convert AVI to MP4
- Choose a AVI video file or drag it onto the page.
- Check the settings and click Convert.
- Download the MP4 video file when it is ready.
Frequently asked questions
Will an old AVI with DivX or Xvid convert?
Yes. The video is re-encoded to H.264 and the sound to AAC, so the MP4 plays on phones, TVs and in browsers. Everything happens on your device, so a long film takes a while.
Is converting AVI to MP4 free?
Yes. Conversion is free, with no sign-up and no watermarks.
Are my AVI files uploaded anywhere?
No. The conversion runs in your browser, so your files never leave your device.
Will the quality change when converting to MP4?
Quality depends on the target format and the settings you choose; lossy formats let you adjust the quality level.