Be Converter
Video Converter Tool - Online Video File Converter

AVI to MP4 Video Converter - Fast & Free Online Tool

Convert AVI videos to MP4 format instantly. Best for sharing on WhatsApp and saving mobile data. Works directly in your browser.

Select AVI Video

Drop your AVI video here for MP4 conversion

or drag file here

Maximum 50MB • 1 file at a time

Related Conversions

MP4 → WEBM
WEBM → MP4
MP4 → GIF
MOV → MP4
MKV → MP4
MOV → JPEG

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How to Use

  1. 1

    Upload AVI Video

    Click the upload button or drag & drop your AVI video file

  2. 2

    Wait for Processing

    Conversion starts automatically with real-time progress tracking

  3. 3

    Preview Result

    Preview the MP4 video before downloading to verify quality

  4. 4

    Download MP4

    Click "Download" to save your converted MP4 video file

Why Use Be Converter?

Browser-Based Processing

Convert AVI to MP4 entirely in your browser. No uploads, no waiting for server processing

Quality Preserved

Modern H.264 encoding maintains excellent quality while significantly reducing file size

Fast Conversion

Hardware-accelerated processing converts your AVI videos to MP4 in seconds

Privacy & Security

All processing happens locally in your browser. Videos never uploaded to any server

No Watermarks

Clean MP4 output with no watermarks, branding, or quality restrictions

Free & Unlimited

No registration required. Unlimited conversions. Completely free forever

Frequently Asked Questions

Why convert AVI to MP4?
AVI is an older format that produces large files and has limited support on modern devices like smartphones and smart TVs. MP4 offers better compression, smaller file sizes (saving storage space), and universal compatibility—perfect for sharing videos on WhatsApp or watching on the go.
Will the converted MP4 be smaller than the original AVI?
Yes, typically MP4 files are 50-70% smaller than AVI files at equivalent quality. AVI uses older codecs that take up more space, while MP4 uses modern compression that delivers excellent quality at much smaller sizes—ideal for low-storage mobile phones.
Does converting AVI to MP4 lose quality?
Our converter uses high-quality H.264 encoding settings. While AVI and MP4 use different codecs, the quality difference is typically minimal. The significant reduction in file size makes the conversion worthwhile for your video library.
What is the maximum file size?
You can convert AVI videos up to 50MB in size. Since AVI files tend to be large, you may need to convert shorter clips or lower resolution videos, especially if they are high-definition recordings from your DSLR or mobile.
Are my videos safe and private?
Absolutely! All AVI to MP4 conversion happens locally in your web browser. Your videos never upload to any server. Once you close the page, all data is permanently deleted from your device's memory.

About AVI to MP4 Converter

Our professional AVI to MP4 converter modernises your legacy video files. AVI was once the standard but has been surpassed by MP4. Converting to MP4 reduces file sizes by up to 70%, improves compatibility across all modern devices, and enables smooth web playback. Free, instant, and works entirely in your browser.

Expert Tips for AVI to MP4 Conversion

  • Convert old AVI home videos to MP4 to save disk space while preserving memories
  • AVI files from old digital cameras convert beautifully to MP4 for modern viewing
  • Use H.264 High Profile for the best quality-to-size ratio when modernising AVI archives
  • Batch convert your entire AVI video library to MP4 for consistent format across all devices
  • MP4 enables streaming and sharing that AVI simply cannot support on modern platforms