Convert MOV to MP4
Your iPhone footage, in the format everything opens — converted on your own device, often without re-encoding a single frame.
Drop your video or audio here
or
MP4, MOV, WebM, MKV, AVI, MP3, WAV and more — any size, no upload
🔒 Files never leave your device — everything runs in your browser.
MOV and MP4 are close cousins — Apple's container and the universal one share the same internal structure. When your MOV holds standard H.264 video (most iPhone recordings before High Efficiency mode, and most exports), ConvertUno converts it by repackaging, not re-encoding: seconds of work, zero quality change, and the result opens on Windows, Android, and every website that shrugged at the original MOV.
Newer iPhones often record HEVC ("High Efficiency"), which needs a real conversion — the tool detects this automatically and hardware-transcodes to H.264 at high quality. Your video never leaves the device either way, which matters for personal footage more than for anything else.
How it works
- Drop your file
Any common format, any size. Nothing is uploaded — the tool runs in your browser.
- Convert
Compatible files are repackaged instantly with zero quality loss; others are hardware-transcoded at high quality.
- Download
Your converted file is ready on your device — nothing to wait for, nothing to delete from a server.
Frequently asked questions
Why do some MOV files convert instantly and others take longer?
Instant ones contained H.264 video already — only the container changed (lossless remux, marked with a badge). Slower ones were HEVC recordings from newer iPhones, which genuinely need re-encoding to play everywhere; that runs on your device's video hardware.
Will I lose quality converting MOV to MP4?
For remuxed files: none at all, bit-for-bit identical video. For HEVC transcodes: the high-quality encode is visually indistinguishable for normal viewing. If you need the file smaller too, use the MOV compressor instead and set an exact size.
Does this work for screen recordings from a Mac?
Yes — macOS screen recordings are MOV with H.264, which makes them perfect remux candidates: instant, lossless, and finally uploadable to tools that reject MOV.
Is my file uploaded to a server?
No. ConvertUno runs entirely in your browser on your own device. Your file never leaves your computer or phone — there is no upload at all.
Is it really free, with no watermark?
Yes. Processing happens on your device, so serving you costs us almost nothing — no watermark, no account, no file-size limit, no daily quota.