How to Convert MOV to MP4 for Free (Windows, Mac, Online)
Why MOV Files Cause Problems
MOV is Apple's QuickTime container format. It plays perfectly on Mac, but Windows users often hit issues — Windows Media Player doesn't always handle MOV well, and many Android devices can't play it at all. MP4 uses the near-identical MPEG-4 container but with broader compatibility. Converting MOV to MP4 solves playback issues on virtually every device.
Convert MOV to MP4 Online
The fastest way is an online converter like CocoConvert. Upload your MOV file, select MP4 as output, and download the result. No software to install, no accounts to create. The video is re-encoded with H.264 — the most universally supported codec — so it'll play on phones, tablets, computers, smart TVs, and game consoles.
On Mac: Use QuickTime or Finder
Mac users have a built-in option: open the MOV in QuickTime Player, then go to File → Export As and pick a resolution. QuickTime exports directly to MP4 with H.264. In macOS Monterey and later, you can also right-click the file in Finder, select Quick Actions → Encode Selected Video Files, and choose MP4.
On Windows: Free Desktop Tools
HandBrake is the best free desktop tool for MOV to MP4 conversion on Windows. Open the MOV file, select MP4 as the container, pick the 'Fast 1080p30' preset (or whatever matches your video), and hit Start. VLC Media Player can also convert: go to Media → Convert/Save, add your MOV, and choose Video - H.264 + MP3 (MP4) as the profile.
Will I Lose Quality?
If the MOV already uses H.264 inside, some converters can 'remux' — copy the video stream without re-encoding. This is instant and lossless. If the MOV uses a different codec (like ProRes or HEVC), re-encoding to H.264 is needed and introduces a tiny quality loss. At reasonable bitrate settings (8-12 Mbps for 1080p), you won't notice any difference.