MOV to MP4 Converter

How to use MOV to MP4 Converter

1. Open MOV to MP4 Converter — it runs entirely in your browser with no setup.
2. Paste or type your input into the text area, or upload a file where supported.
3. Set any options you need. The result appears in the output panel — there is no upload step and no waiting on a server.
4. Review the output instantly; large inputs are handled locally without lag.
5. Copy the result to your clipboard or download it. Your data never leaves the page.

Why use MOV to MP4 Converter?

• 100% free with no limits, no sign-up and no watermarks.
• Private by design — your data are processed in your browser and never uploaded to a server.
• Fast and lightweight, with instant results even on a phone or a slow connection.
• Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
• Part of a full media studio suite, so related mov to mp4 tasks are one click away.

What people use MOV to MP4 Converter for

• Making an iPhone or Mac video playable on Windows and Android.
• Preparing footage for a platform that rejects MOV.
• Standardising a mixed set of clips before editing.

MOV to MP4 Converter: limits and things worth knowing

• MOV and MP4 are both containers, and both commonly hold H.264 video with AAC audio. When the codecs already match, the conversion is a remux — the streams are copied into a new container without re-encoding, so it is fast and lossless.
• If the MOV uses ProRes or another codec MP4 does not support, a full re-encode is required, which takes far longer and loses some quality.
• Conversion runs on your device through FFmpeg compiled to WebAssembly, so the video is never uploaded. Large files are limited by browser memory rather than by an upload cap.
• There is no upload limit because there is no upload. Server-side converters cap free file sizes because bandwidth and storage cost them money; this tool never sends the file anywhere, so no quota applies to it.
• The real constraint is your device's memory, not a plan tier. FFmpeg runs here as WebAssembly inside the browser tab, and the whole file plus its output has to fit in the memory that tab is allowed — so a large file can fail on a phone and succeed on a laptop.
• If a large file fails, the tab runs out of memory rather than silently producing a corrupt result. Closing other tabs, using a desktop browser, or trimming the file first are the practical fixes.
• A 64-bit desktop browser with several gigabytes free handles files far larger than the typical free tier of a server-side converter. We deliberately do not publish a single maximum figure, because the honest answer depends on your device and stating one number would be wrong for most people.
• Nothing is queued and nothing is rate-limited. Conversion speed depends on your processor, so a long video takes longer on a phone — but it starts immediately rather than waiting behind other users' jobs.

Supported formats

Reads: MOV. Writes: MP4.

Is it private and secure?

Your privacy is built in. MOV to MP4 Converter runs completely on your device, so whatever you enter stays in your browser and is never transmitted, logged or stored on any server.

Network activity: none. Nothing is sent and nothing is fetched. This tool makes no network request at all once the page has loaded — which is why it keeps working if your connection drops.

You do not have to take that on trust — our privacy proof page publishes the Content-Security-Policy that enforces it, lists every third party it permits, and shows how to verify the whole claim yourself.

Learn more

Why Browser-Based Tools Are Safer for Your Files — Most online converters upload your files to a server. Client-side tools don't. Here's why that difference matters for privacy.