MOV to MP4 Converter
FREE
Convert MOV to MP4 online free in your browser. Turn QuickTime .mov files into MP4 with adjustable quality — no server upload required.
Drop AVI video here or
First run downloads FFmpeg (~25 MB) once in this browser. Need AVI to GIF instead? Try /avi-to-gif.
Help Us Improve
—
(—)
AVI to MP4 converter online free
Convert AVI to MP4 online free in your browser. Turn .avi videos into H.264 MP4 with adjustable quality — no server upload required.
What is an AVI to MP4 converter?
An AVI to MP4 converter changes older AVI video files into the widely supported MP4 format (usually H.264 video and AAC audio). People search convert AVI to MP4, .avi to .mp4, or how to convert AVI format to MP4 when phones, editors, or social apps prefer MP4. This free tool runs locally with FFmpeg WebAssembly — no server upload.
AVI to MP4 converter features
Browser-based AVI to MP4 conversion with privacy-first processing.
Convert AVI to MP4 online
Upload a .avi file and download a compatible MP4 in your browser.
AVI converter to MP4
Re-encode common AVI containers into web-ready H.264 MP4.
Adjustable output quality
Tune H.264 CRF to balance visual quality and MP4 file size.
No server upload
FFmpeg WebAssembly processes video on your device for better privacy.
Web-ready MP4
Output uses even dimensions, H.264, optional AAC, and faststart.
How to convert AVI to MP4 online
Convert an AVI file to MP4 in three steps.
Upload AVI file
Drop or select your .avi video (up to 200 MB).
Set quality (CRF)
Keep the default CRF 23 for balanced quality, or lower CRF for sharper output.
Convert and download
Click Convert to MP4, then download the result.
Great for
Common AVI to MP4 conversion scenarios.
Old camera and PC clips
Update legacy AVI recordings to MP4 for modern players.
Phone and social uploads
Convert AVI before posting to apps that prefer MP4.
Editing workflows
Standardize AVI footage to MP4 for NLEs and mobile editors.
Sharing by email or chat
Create MP4 files recipients can open without AVI codecs.
Frequently Asked Questions
Quick answers about this tool—open a question to read more.