Excel Date Converter
Excel serial numbers to dates and dates to serials — 1900, 1904 and Google Sheets.
Convert iPhone and QuickTime video to MP4 for Windows, Android and the web.
Drop a MOV here, or click to choose one
Converted on your device — the video is never uploaded
The MOV to MP4 Converter turns iPhone and QuickTime video into H.264 MP4 for Windows, Android and the web, with resizing, frame rate and trimming.
MOV is Apple’s QuickTime container: what an iPhone records, what a Mac screen recording produces, and what Final Cut exports. Send one to a Windows machine, an Android phone or a web platform and it is a coin toss whether it plays.
The conversion runs in your browser through ffmpeg.wasm — the real ffmpeg, compiled to WebAssembly. Nothing is uploaded: a wedding video, a client recording or an unreleased track never leaves your machine. The engine is a one-off download of about 32 MB, after which your browser caches it and every later conversion starts immediately.
The MP4 that comes out uses H.264 video and AAC audio with faststart metadata, which is the combination every device, browser and social platform accepts. Choose the quality and encoding speed, scale to 1080p or 720p, change the frame rate, trim to a section or remove the audio. Where the MOV already holds H.264 video, the picture stays very close to the original.
Newer iPhone recordings are decoded and re-encoded to H.264.
Scaling 4K to 1080p typically cuts the size by three quarters.
A portrait clip stays portrait.
Give a start time and a length to take just the part you need.
ffmpeg runs inside the browser tab, so the file never leaves your computer.
Straight from an iPhone or a Mac.
1080p at Good quality suits most uses.
Much faster than converting the lot.
An MP4 that plays anywhere.
Because it records at a high bitrate, often in 4K at 60 fps. Scaling to 1080p and re-encoding at Good quality usually cuts the size by three quarters.
Usually yes — newer iPhones record HEVC in a MOV, and it is decoded and re-encoded to H.264. Very new variants can fail, and the page says so rather than producing a broken file.
The rotation metadata is carried across, so a portrait clip stays portrait in players that respect it.
No imposed limit, but browser encoding is slow: a clip of a few minutes is comfortable, an hour is an ambitious afternoon.
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