MOV to MP4 converter
Convert MOV to MP4 in your browser. For ordinary phone and camera footage the streams are copied across, so it finishes in seconds with no quality loss.
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Accepts .mov,.qt · Up to 20 files at a time · up to 667 MB each "Upload" and "download" here mean your browser reading a file from this device and writing one back to it. Nothing is sent to a server — open your browser's network panel and watch: no request carries your file.
FAQ
Does converting MOV to MP4 reduce the quality?
Not in the normal case. The video and audio streams are copied into the new container without being decoded, so the result is identical to the source. Quality only changes if you ask for a different resolution or quality preset, or if you turn off stream copy, because either forces a genuine re-encode.
Why is it so much faster than other video conversions?
Because nothing is being encoded. Re-encoding video means decoding every frame and compressing it again, which is the slow part; copying streams is closer to renaming the file. A clip that takes two minutes to re-encode is typically rewritten in a couple of seconds.
Why does my iPhone video need converting at all?
iPhones record to MOV, and while the codecs inside are standard, plenty of editors, upload forms and older TVs check the file extension rather than the contents. Rewriting the same streams into an MP4 container satisfies them without altering the footage.
Will the output play everywhere?
It will if the source was ordinary H.264 or HEVC footage. HEVC — which iPhones use for their "High Efficiency" setting — is fine inside MP4 but is itself not universally supported on older devices. If a device rejects the result, the codec is the reason, not the container, and you need a re-encode to H.264 rather than a copy.
Is there a file size limit?
Around 667 MB for this conversion. A container swap produces an output the same size as the input, and both have to fit in the converter's memory alongside its working buffers — so the ceiling is lower here than for extracting audio, where the output is a fraction of the source. The upload box shows the exact figure.
Are subtitle and multiple audio tracks kept?
Every audio track is kept, including the second language track a film may carry. Subtitles are not: MP4 accepts almost none of the subtitle formats a MOV or MKV can hold, so they are left out rather than failing the job. Extract them separately if you need them.
Does the file get uploaded?
No. The conversion runs inside this page using a WebAssembly build of ffmpeg. Open your browser's network panel while converting and you will see no request carrying the video.
Is it really free?
Yes — every conversion on this site, with no account, no watermark and no daily cap. The work happens on your own device, so there is no server bill for us to pass on to you.
Do I need to install anything?
No. It runs in any modern browser, on Windows, macOS, Linux, Android and iOS. There is nothing to download and nothing to sign up for, and once the page has loaded it keeps working with the network switched off.
Related converters
- MP4toMOVRepackages the same streams — lossless and near-instant
- MOVtoMP3Drops the video, re-encodes the audio to MP3
- MOVtoGIFTurns a clip into an animated GIF
- MKVtoMP4Repackages the same streams — lossless and near-instant
- WebMtoMP4Re-encodes every frame for the new container
- AVItoMP4Re-encodes every frame for the new container
- WMVtoMP4Re-encodes every frame for the new container
- FLVtoMP4Re-encodes every frame for the new container