How to convert MOV to MP4 online
- 1
Drop your MOV file
Drag your QuickTime Movie file onto the box above, or click it to pick a file.
- 2
Wait while it converts
Conversion starts on its own and runs on your device, not on a server. Video takes roughly as long as the clip plays, so keep the tab open.
- 3
Download your MP4
Click Download to save the MPEG-4 Part 14 file.
MOV vs MP4: format overview
QuickTime Movie
Apple · 1991
- Compression
- lossy
- Transparency
- No
- ✓ High quality, preferred by Apple ecosystem
- ✓ Supports ProRes codec for editing
- ✗ Poor Windows/Android compatibility without QuickTime
MPEG-4 Part 14
Moving Picture Experts Group · 2001
- Compression
- lossy
- Transparency
- No
- ✓ Universal compatibility across all platforms
- ✓ Excellent compression with H.264/H.265
MOV magic bytes: 00 00 00 xx 66 74 79 70 71 74
MP4 magic bytes: 00 00 00 xx 66 74 79 70
Why convert MOV to MP4?
MOV is Apple's video format. It's what your iPhone records, what QuickTime saves, and what iMovie exports by default. On a Mac it just works. Elsewhere it's hit and miss: some Windows apps, older smart TVs and upload forms reject a .mov file even when the video inside is fine.
MP4 is the format almost every app, site and device expects. Instagram, TikTok, YouTube, Discord and email clients all take it.
Here's the useful part: MOV and MP4 are close relatives. Most iPhone and Mac MOV files hold H.264 or HEVC (H.265) video, and MP4 can carry both as they are. So this converter doesn't rebuild the picture — it copies the video stream into an MP4 wrapper. That's why it's fast and why the picture doesn't change.
Common reasons to convert MOV to MP4:
- ›A website or app rejects your .mov upload
- ›Sending an iPhone video to someone on Windows or Android
- ›A video editor or school/work portal that only lists MP4
- ›Getting an email attachment that previews inline
Quality & file size: MOV to MP4
The picture is not re-encoded. The video stream from your MOV is copied into the MP4 as it is, so resolution, frame rate and image quality stay exactly the same, and the file ends up about the same size. A 4K 60 fps clip stays 4K 60 fps.
The sound is copied too when it is already AAC, as it is in iPhone videos. Other sound is re-encoded to AAC at 192 kbps, the standard audio format for MP4.
The codec also stays the same. If your iPhone recorded in High Efficiency mode (the default), the MP4 still holds HEVC video. iPhones, Macs and most Android phones play it, but a Windows PC needs Microsoft's HEVC Video Extensions to play HEVC.
MOV files that use editing codecs such as Apple ProRes can't be copied into an MP4 as they are. For those, the converter re-encodes the video to H.264 instead. That takes much longer, and the picture is compressed once, so fine detail can soften slightly.
Frequently asked questions
Will converting MOV to MP4 reduce video quality?
Can I just rename a .mov file to .mp4?
How do I convert MOV to MP4 on a Mac?
How do I convert MOV to MP4 on Windows?
Why won't my converted MP4 play on Windows?
How do I make my iPhone record MP4-friendly H.264 video?
How do I convert MOV to MP4 on my iPhone?
How do I convert MOV to MP4 on Android?
Can it convert ProRes MOV files to MP4?
Your MOV file never leaves this tab — FormatDrop has no endpoint that receives file data. How it works