MOV to MP4 Converter
Convert Apple QuickTime MOV videos to widely-compatible H.264 MP4, in your browser. Free, private, no signup or upload.
About the MOV to MP4 Converter
This free MOV to MP4 converter turns Apple QuickTime .mov files — the format iPhones and Macs record in — into H.264 MP4 that plays smoothly on Windows, Android, browsers and social platforms. If a MOV will not open or upload somewhere, converting to MP4 almost always fixes it.
The conversion runs in your browser through FFmpeg WebAssembly, so your video is never uploaded. The engine (about 30 MB) downloads from a CDN on first use and is cached, so the first conversion is the slow one. The output uses a web-friendly yuv420p pixel format and even dimensions for full compatibility.
Converting re-encodes the video, so it takes a little time and cannot add quality beyond the MOV source — but a higher quality setting keeps more detail. Files up to 100 MB are supported.
How to Use the MOV to MP4 Converter
- 1Choose a MOV file, up to 100 MB.
- 2Pick a quality — Balanced is recommended.
- 3Click Convert to MP4 and wait for the progress bar.
- 4Preview the MP4 and download it.
Frequently Asked Questions
Is my file uploaded to a server?
No. All processing runs in your browser using FFmpeg compiled to WebAssembly. Your file never leaves your device — only the converter engine is downloaded, once.
Why is the first run slow?
The first time you use any converter here, the browser downloads the FFmpeg core (about 30 MB) from a CDN and compiles it. It is then cached for the session, so later runs are much faster.
Why convert MOV to MP4?
MOV is Apple's QuickTime format and can be awkward on Windows, Android and some websites. MP4 with H.264 is supported almost everywhere, so it uploads and plays reliably.
Will the quality drop?
At the High or Balanced setting the difference is very hard to see. Converting cannot add quality beyond the source, but a good setting preserves nearly all of it.
Is there a file size limit?
Yes, 100 MB per file. Because everything runs in your browser's memory, very large files can be slow or run out of memory. Trim long clips first if you hit the limit.