How to Convert Between Video Formats Online (MP4, MOV, AVI)

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Not every device, app, or platform handles every video format the same way. A MOV file from an iPhone might not play well on a Windows PC, and some upload forms only accept MP4. Converting between formats fixes that without re-recording anything.

When you need to convert a video's format

• A MOV file from an iPhone won't open properly in a Windows video player
• A platform or upload form only accepts a specific format like MP4
• An older AVI file needs to be converted to a more modern, widely supported format
• A video editor requires a different format than the one you have

How to convert a video format, step by step

1. Open the Video Converter.
2. Upload the video file you want to convert.
3. Choose the output format — MP4, MOV, or AVI.
4. Let the tool convert the file.
5. Download the converted video.

Tips before converting

• MP4 is the safest default for the widest compatibility across devices, platforms, and editors, if you're not sure which format you need.
• Check the target requirement first. If you're uploading somewhere specific, confirm which format it expects before converting, to avoid doing it twice.
• Compress afterward if needed — format conversion and file size are separate; use the Video Compressor if the converted file is still too large.

Common questions

Does converting formats reduce video quality? The conversion aims to preserve quality as closely as possible; very old or unusual source formats may show minor differences after conversion.

Which format should I choose if I'm not sure? MP4 is the most broadly compatible choice across phones, computers, browsers, and social platforms.

Can I convert multiple videos at once? Convert each file individually through the tool; for combining multiple clips into one file afterward, see the Video Merger.

Have a video in the wrong format? Convert your video for free →