MP4 to AVI Converter
Convert MP4 to AVI online for free. MP4 to AVI in seconds — no software install, no watermark, secure and fast.
Drag & drop your MP4 file here, or
How to convert MP4 to AVI in 3 steps
- 1
Upload your MP4 file
Drag and drop or select the MP4 file you want to convert.
- 2
Choose AVI as output
The output format is pre-selected for you — just confirm and start the conversion.
- 3
Download your file
Once processing finishes, download your converted AVI file instantly.
Benefits of converting MP4 to AVI
Get simple
Switching from MP4 to AVI means your file now offers simple, widely-supported legacy playback on older hardware.
Wider compatibility
MP4 is great for broad compatibility across browsers, but not every app or device handles it well. Converting to AVI sidesteps that, so the file opens wherever you need it to.
No quality compromise
ConvertFastHub runs FFmpeg at production settings, preserving as much of the original MP4 fidelity as the AVI format allows.
Keep your original too
Converting doesn't touch your source file — you get a brand-new AVI file back and can keep both versions.
Frequently asked questions
- How do I convert MP4 to AVI online?
- Upload your MP4 file above, select AVI as the output format, and click Convert. ConvertFastHub processes the file in the cloud and gives you a download link — no software installation required.
- Is it free to convert MP4 to AVI?
- Yes. Free accounts get 10 conversions every 24 hours with files up to 50MB. For unlimited conversions, larger files up to 1.5GB, and priority processing, upgrade to ConvertFastHub Pro.
- What's the advantage of AVI over MP4?
- AVI offers simple, widely-supported legacy playback on older hardware. Meanwhile, MP4 is known for broad compatibility across browsers, phones, and smart TVs with efficient H.264/H.265 compression — the right choice depends on where you plan to use the file.
- Will converting MP4 to AVI reduce quality?
- ConvertFastHub uses production-grade engines (FFmpeg, LibreOffice, ImageMagick) configured for maximum fidelity. Some format conversions are inherently lossy by design; where possible, we preserve the original quality.
- Is my file safe when I convert it?
- Files are uploaded over an encrypted connection directly to storage, processed in an isolated sandboxed worker, and permanently deleted within 24 hours.