Free Video to MP4 Converter - Convert Any Video Online

A MP4 is the most universally supported format. It works on all browsers, phones, TVs, and players.

A Medium (CRF 23) for sharing, High (CRF 18) for archiving, Low (CRF 28) for smaller files.

A No, original resolution is preserved. Only the container and codec are changed.

A Our free online tool allows you to easily convert MKV files, along with AVI, WebM, and MOV, directly within your web browser. Simply upload your MKV video, select MP4 as the output format, and the conversion happens on our servers. This means you don't need to install any software or plugins, making it convenient for quick conversions on any device.

A While our tool primarily changes the video's container and codec to MP4, preserving the original resolution, converting to MP4 can often result in a smaller file size compared to formats like AVI or WebM due to MP4's superior compression efficiency. This can be beneficial for meeting social media upload limits, allowing you to share your videos more easily without significant quality loss.

A We don't impose a strict file size limit for uploads; you can convert most standard video files. However, extremely large files, like those over 4GB, might take longer to process. For the best experience, we recommend uploading files under 2GB. You'll see the progress bar fill up as your video converts.

A DRM-protected files from services like Netflix or iTunes won't work. Our tool processes the video on our servers, and DRM encryption blocks that process entirely. You'll get an error message if you try. This isn't a limitation we can bypass legally. For your own recordings or downloaded files without DRM, everything works fine. Stick to unprotected content you own.

A No, wait until the file is fully downloaded or uploaded before starting conversion. Partial files cause errors or produce corrupted MP4s that won't play. For example, a 500MB MKV that's only 60% uploaded will fail. Let the progress bar hit 100% first, then hit convert. This saves you from wasting time on a broken output.