MPEG-4 Part 14
The most widely supported video format, playing on nearly every phone, TV, browser and editor.
- Type
- video
- Best for
- sharing and everyday playback
No account · no upload · no watermark
Convert MP4 to AVI. Completely free.
Drop your MP4 and get an AVI back, right here in this tab. Your own computer does the work, so nothing gets uploaded, and there's no paid version.
MP4 to AVI converter
Audio Video Interleave
A Microsoft container from 1992 that older players and software still expect.
- Type
- video
- Best for
- older players and software
What to expect
If the video and audio inside are already something AVI can hold, they're copied across with no quality loss, which takes seconds. Otherwise they're re-encoded, on your graphics hardware where possible and with FFmpeg in the tab where not.
How to convert MP4 to AVI
- Drop your MP4 on this page, or choose it from your device.
- AVI is already selected. Adjust quality, size or trim if you want to, and each option shows the size it will produce.
- Press Convert, watch it work, then download the result.
Questions
Is this MP4 to AVI converter really free?
Yes, completely. Every tool and every format is free, and there's no paid version, account, watermark or daily limit.
Do my files get uploaded?
No. Your browser does the work on your own device, so your files stay with you. Closing the tab clears them from memory.
Can I convert several files at once?
Yes. Drop as many as you like, and the results can be downloaded together as a ZIP.
Does it work on a phone?
Yes, in a current mobile browser. Large files are limited by how much memory your device can spare.
What should I know about MP4 to AVI?
If the video and audio inside are already something AVI can hold, they're copied across with no quality loss, which takes seconds. Otherwise they're re-encoded, on your graphics hardware where possible and with FFmpeg in the tab where not.
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Ready to convert your MP4?
- Completely free
- Nothing uploaded
- No account
- No watermark