Free AVI to MP4 Converter – Fast & Private
Convert AVI videos to MP4 format directly in your browser. No files are uploaded to any server, no signup required – quick, secure, and ideal for modern devices and platforms.
AVI to MP4 Video Converter
Convert AVI videos to MP4 format directly in your browser. Powered by WebAssembly for maximum privacy and speed.
Drag & drop AVI video here
or
Upload AVI files • High-quality MP4 output • Batch supported • Up to 500 MB • 100% client-side • No server upload
How to Convert AVI to MP4 in 4 Simple Steps
- Upload – Click or drag your AVI video file(s)
- Choose – Select quality or options if available
- Convert – Processing happens instantly in browser
- Download – Save your MP4 file(s)
Why Use This AVI to MP4 Converter?
- 100% private – everything processed on your device
- Converts AVI (older format) to widely compatible MP4
- Supports batch conversion – multiple files at once
- High-quality output – preserves video & audio clarity
- Free forever – no registration, ads or watermarks
- Offline capable – install as PWA for use anywhere
- Fast performance even on mobile devices
AVI to MP4 Converter Comparison
| Feature | Waridi Tech | Other Online Tools |
|---|---|---|
| Privacy | 100% client-side | Often uploads videos |
| Speed | Fast in-browser | Server-dependent |
| Cost | Free, unlimited | Free with limits |
| Batch Conversion | Yes | Limited or paid |
| Offline Support | Yes (PWA) | No |
Frequently Asked Questions
Is this AVI to MP4 converter free?
Yes – completely free, no signup, no limits or hidden fees.
Why convert AVI to MP4?
MP4 is widely compatible with phones, browsers, TVs and social media, while AVI is older and less supported today.
Is the conversion private and safe?
Yes – 100% client-side. Your video never leaves your device or gets uploaded anywhere.
Does it preserve video quality?
Yes – high-quality encoding is used; you can often select quality settings to balance file size and clarity.
Can I convert multiple videos at once?
Yes – batch conversion is supported. Upload several AVI files and convert them together.
Can I use it offline?
Yes – install as PWA to use without internet after first load.
What is the maximum file size?
Up to 500 MB per file (browser memory dependent). Smaller videos convert faster.
Is audio preserved during conversion?
Yes – audio tracks are kept intact and re-encoded to MP4-compatible format (usually AAC).
Related Video Tools
More Free Tools
- Video Converter – multiple formats support
- Document Converter – PDF, Word, Excel & more
- Image Converter & Editor – multiple formats & edits
- Audio Editor – trim, convert audio files
- Social Media Downloader – videos & photos
Ready to Convert AVI to MP4?
Fast, private, and free – make your AVI videos compatible with any device without uploading anything.
Available Worldwide
Works in modern browsers on desktop, tablet and mobile. Updated March 2026.