MOV to MP4 Converter

Convert a QuickTime .mov into a universally-playable MP4 (H.264 / AAC). Done on your device — your video is never uploaded.

Drop your file here, or click to choose Processed privately in your browser — nothing is uploaded

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100% private. Your file is processed in your browser with ffmpeg (WebAssembly) and is never uploaded. Big or long files take longer and use more memory — for those, trim first.

How to Use the MOV to MP4 Converter

Three steps, all in your browser.

1

Load your MOV

Drag a .mov file onto the box or click to select one. MOV is the format iPhones and QuickTime record in.

2

Convert to MP4

Click Convert. The video is re-encoded to H.264 with AAC audio — the combination that plays on virtually every device and app.

3

Download the MP4

Preview the result and download the .mp4. It is optimised with faststart so it begins playing while it loads.

Frequently Asked Questions

How do I convert MOV to MP4?
Load your .mov file, click Convert, and the tool re-encodes it to an MP4 with H.264 video and AAC audio inside your browser. When it finishes you can preview the MP4 and download it. No app install and nothing to upload.
Why convert MOV to MP4?
MOV is Apple’s QuickTime container and does not always play smoothly on Windows, Android or older web players. MP4 with H.264 is the most widely supported video format, so converting makes your clip play reliably almost everywhere and upload cleanly to most sites.
Is my video uploaded to a server?
No. Conversion happens on your own device with ffmpeg compiled to WebAssembly, so the file is never uploaded, stored or logged. That makes it safe for personal recordings, and it works offline once the page has loaded.
Will I lose quality?
Re-encoding is lossy, but the default quality setting (CRF 23) is visually close to the original for normal footage while keeping the file size sensible. Most people cannot tell the difference at normal viewing sizes.
Is there a file-size limit?
No hard limit, but because everything runs in your browser, very large or long 4K files use a lot of memory and take longer to convert. For big files, trimming first with our Video Trimmer helps.

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