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MOV to MP4 Converter

Convert MOV files to MP4 instantly and privately. File Transmute runs entirely in your browser, so your MOV is never uploaded to any server.

No upload Instant Free

Reviewed by Ismail Sab Ajnalkar · Updated July 2026

Runs in your browser via WebAssembly — your media is never uploaded. The FFmpeg engine (~30MB) downloads once on first use, so the first conversion takes a little longer.
Privacy, proven — live
Online
0 BUploaded to our servers
0Requests carrying your data
0Files stored by us
—Processed on your devicedrop a file
Conversions run entirely in your browser. Turn off your Wi-Fi and try it — it still works. Nothing leaves this device.

MOV is Apple's QuickTime video format, common from iPhones and Macs. MP4 is the most widely supported video container — it plays virtually everywhere. File Transmute turns your MOV into MP4 right in your browser — no upload, no sign-up, and no daily limit. Because the conversion runs on your own device, even sensitive files stay private, and it keeps working offline once the page has loaded.

Best for

  • Making an iPhone MOV video play on Windows, Android, or older players
  • Uploading to a site or app that rejects MOV but accepts MP4
  • Standardising a QuickTime clip into a widely-shareable format

Good to know

Converts QuickTime MOV to widely-compatible MP4 (H.264). It runs on your device via FFmpeg (WebAssembly, ~30 MB), which downloads once on first use and is then cached — so the first conversion is slower to start. Large or long videos are limited by your device's memory.

How to convert MOV → MP4

01

Drop your MOV file into the converter above — it stays on your device.

02

Choose MP4 as the output. File Transmute picks the smartest settings automatically.

03

Click Convert and download your MP4 file instantly.

Frequently asked questions

MOV is Apple's QuickTime format, and many Windows apps, Android devices, and websites don't support it. Converting to MP4 (H.264) makes it play virtually everywhere.

Yes — the video is re-encoded to MP4 at comparable quality. As with any re-encode a little detail changes, but it isn't visible in normal viewing.

No. The conversion runs in your browser with FFmpeg, so the video never leaves your device — it even works offline once the page has loaded.

The ~30 MB FFmpeg engine downloads once on first use and then stays cached, so the first conversion is slow to start and every one after it is quick.

Related guides

Convert MOV and MKV to MP4 in Your Browser (No Upload)MOV and MKV files often won't play in the apps you need. Here's how a browser-based MOV to MP4 converter repackages them to universal MP4 on your own device — and the honest note about FFmpeg loading once.Why Won't My Video or Audio File Play? A Troubleshooting GuideMost "won't play" errors are a wrong codec or container, not a broken file — and converting fixes them. Here's how to diagnose and fix video and audio playback.MOV File Won't Play on Windows? Here's the FixAn iPhone MOV video won't play on your Windows PC? It's usually the codec. Convert MOV to MP4 in your browser to fix it — free, private, no upload.MKV Won't Play on iPhone or Smart TV? Convert ItMKV files won't play on iPhone, iPad, or many smart TVs. Convert MKV to MP4 in your browser to play it anywhere — free, private, no upload.WhatsApp Video Too Large to Send? Compress It FirstWhatsApp caps video at ~16 MB and crushes quality on the rest. Compress your video first in your browser to send it clearly — free, private, no upload.AVI vs MP4 vs MOV vs MKV: Which Video Format to UseAVI, MP4, MOV and MKV are containers, not codecs. Here's what each is best for, which plays where, and why MP4 is the safe default for sharing.
Use this nextAVI → MP4

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