AVI to MP4 Converter

Convert AVI videos to MP4 format for modern compatibility. Free online AVI to MP4 converter. No software installation required.

100% Free
Unlimited Conversions
High Quality Video
Secure & Private

Select or drop your file

Click to browse or drag and drop your file here

Accepted formats: .mp3, .wav, .m4a, .flac, .aac, .ogg, .mp4, .mov, .avi, .mkv, .webm, .jpg, .jpeg, .png, .webp, .gif, .bmp, .tiff, .pdf, .txt

Max size: 500 MB

Why Convert AVI to MP4?

Universal Compatibility

MP4 is the most widely supported video format. Convert your AVI files to MP4 for playback on any device, platform, or video player without compatibility issues.

Better Compression

MP4 files are typically smaller than AVI files while maintaining similar quality. Save storage space and reduce file sizes for easier sharing and uploading.

Modern Standards

Convert legacy AVI format to modern MP4 for better quality, features, and compatibility with today's video players, streaming services, and mobile devices.

Fast & Convenient

Convert AVI to MP4 in seconds directly in your browser. No software download, no registration, no waiting. Fast and completely free conversion.

How to Convert AVI to MP4

1

Upload AVI File

Click the upload area or drag and drop your AVI video file into the converter. We support files up to 500MB.

2

Select MP4 Format

Choose MP4 as your output format. Select quality preset: Low (720p), Medium (1080p), or High (1080p+) for best video quality.

3

Convert & Download

Click convert and wait a few seconds. Your MP4 file will be ready to download instantly. It's that simple!

Features of Our AVI to MP4 Converter

Lightning Fast

Convert AVI to MP4 in seconds with our optimized browser-based technology

100% Private

All conversion happens locally in your browser. Your files never leave your device

High Quality

Choose quality presets up to 1080p+ for the best video quality

Frequently Asked Questions

Is AVI to MP4 conversion free?

Yes, our AVI to MP4 converter is completely free with no limitations. Convert unlimited files for free.

Will I lose video quality?

You control the quality. Choose High quality (1080p+) for near-original video quality, or lower settings for smaller file sizes.

How long does conversion take?

Most AVI to MP4 conversions complete in under a minute. Actual time depends on your device's processing power and file size.

Can I convert multiple AVI files?

Yes! You can convert as many files as you need, one at a time. There's no limit on the number of conversions.

What's the difference between AVI and MP4?

AVI is a legacy video format that's less compressed, while MP4 uses modern compression technology. MP4 has better compression, smaller file sizes, and wider compatibility with today's devices and platforms.

Best Free AVI to MP4 Converter Online

FreeConvertOnline.net offers the best free AVI to MP4 conversion service. Convert your legacy AVI videos to modern MP4 format instantly in your browser. Our advanced converter preserves video quality while giving you smaller, more convenient MP4 files.

Why Convert AVI to MP4?

Converting AVI videos to MP4 format has many benefits. You can enjoy universal compatibility across all devices and platforms, reduce file sizes for easier sharing, and use your videos on any website or social media platform. Our converter makes this process simple and fast.

Modern Format Conversion

AVI is a legacy video format that's been largely replaced by modern formats like MP4. Converting to MP4 gives you access to better compression technology, improved video quality, and compatibility with today's video players and streaming services.

Secure Browser-Based Conversion

Unlike other online converters, we never upload your files to a server. All AVI to MP4 conversion happens locally in your browser using WebAssembly technology. This means your videos and private data stay completely secure on your device.

High-Quality Video Conversion

Our converter uses industry-standard FFmpeg technology to convert AVI videos to MP4 with excellent quality. Choose from multiple quality presets to balance between file size and video fidelity according to your needs.