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Convert MP4 to AVI Online

Swap Formats

Convert MP4 files to AVI instantly in your browser. Free, fast, and 100% private - your files never leave your device. No account or software required. Supports batch conversion and custom settings.

Choose MP4 files or drag & drop

Multiple files supported · No file size limit

100% PrivateNo UploadFree

Video Settings

How to Convert MP4 to AVI - 3 Simple Steps

1

Upload Your MP4 File

Drag and drop your MP4 file into the upload area above, or click to browse your device. You can upload multiple files at once for batch conversion.

2

Adjust Settings

Set your preferred quality, resize dimensions, or other format-specific options. The default settings are optimized for the best AVI output.

3

Download AVI File

Click Convert and your AVI file is ready instantly. Download individual files or click "Download All as ZIP" for batch results.

MP4 vs AVI — Format Comparison

FeatureMP4AVI
File SizeMedium (H.264/H.265)Large (legacy container)
CompressionLossyLossy
Transparency (Alpha)✗ Not supported✗ Not supported
Animation✓ Supported✓ Supported
Vector-based✗ No (raster)✗ No (raster)
Browser SupportAll major browsersLimited (older format, requires codecs)
Best ForVideo sharing, streaming, social media, web playbackLegacy Windows applications, older media players

Also Convert MP4 to:

MP4 → WEBMMP4 → MOVMP4 → GIF

Convert Other Formats to AVI:

WEBM → AVIMOV → AVI

Why Use ConvertTheFile for MP4 to AVI?

🔒

100% Private

Files are converted in your browser and never uploaded to any server.

⚡

Instant Conversion

No waiting for uploads or server processing. Results are instant.

🆓

Completely Free

No limits, no watermarks, no account required - forever free.

📦

Batch Conversion

Convert multiple files at once and download them as a ZIP archive.

Frequently Asked Questions — MP4 to AVI Converter

How do I convert MP4 to AVI online?
Upload your MP4 file by dragging it into the upload area or clicking to browse your files. click Convert. Your AVI file will be ready to download in seconds — no account or software required.
Is it safe to convert MP4 files to AVI online?
Completely safe. This converter runs entirely in your browser. Your MP4 files are never uploaded to any server — conversion happens locally on your device using browser APIs. Files are not stored or shared.
What is the difference between MP4 and AVI?
MP4 is best for: Video sharing, streaming, social media, web playback. AVI is best for: Legacy Windows applications, older media players.
Is this MP4 to AVI converter free?
Yes, completely free with no limits. There is no registration, no watermarks, no file size limit beyond what your browser can handle, and no hidden charges.
Can I batch convert multiple MP4 files to AVI?
Yes. Upload multiple MP4 files at once — each is converted separately and you can download all results as a ZIP archive.
How long does MP4 to AVI conversion take?
Video conversion is the most CPU-intensive. A 1-minute 1080p video may take 2–10 minutes depending on your device. Processing happens entirely in your browser.

About MP4 (MPEG-4 Part 14)

MP4 is the most universal video format, combining H.264/H.265 video with AAC audio. Supported by virtually every device, browser, and platform.

Learn more about MP4 →

About AVI (Audio Video Interleave)

AVI is Microsoft's legacy container format supporting various codecs. While older, it remains common in Windows environments and older media players.

Learn more about AVI →