Convert MOV to MP4 Online (Free, No Upload)

Drop your MOV file here and get an MP4 back in seconds. The conversion runs right in your browser, so your video never gets uploaded anywhere. It's completely free, works on any device, and you don't need an account.

Try it in your browser

Loading FFmpeg engine... (~31 MB)

How to mov to mp4 online online

1Drop your MOV file into the tool above, or click to browse your files.
2Pick a preset or leave the defaults. The standard settings work well for most videos.
3Hit convert and download your MP4 file when it's done.

About MP4 format

MOV is Apple's video container format. If you've ever recorded a video on an iPhone or Mac, you've got MOV files. They work great on Apple devices but can be a headache elsewhere. Windows media players sometimes choke on them, Android phones might not play them, and plenty of websites reject MOV uploads.

MP4 is the closest thing to a universal video format. It plays on virtually every device, browser, and platform out there. Social media sites, messaging apps, and video hosts all accept MP4 without fuss.

When you convert MOV to MP4, you're really just repackaging the video into a more widely supported container. The video quality stays the same. The file size is usually similar too, unless you choose to compress it during conversion. If your MOV file already contains H.264 video (most iPhone recordings do), the conversion can be near-instant with a stream copy that skips re-encoding entirely.

Use the API

curl -X POST https://renderio.dev/api/v1/run-ffmpeg-command \
  -H "X-API-KEY: ffsk_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
  "ffmpeg_command": "-i {{in_video}} -c:v libx264 -crf 23 -c:a aac -movflags +faststart {{out_video}}",
  "input_files": {
    "in_video": "https://example.com/input.mov"
  },
  "output_files": {
    "out_video": "output.mp4"
  }
}'

Need an API key? Get your free API key to start processing files programmatically.

Common Variations

Stream copy (no re-encode, fastest)

-i input.mov -c copy -movflags +faststart output.mp4

High quality for archival

-i input.mov -c:v libx264 -crf 18 -preset slow -c:a aac -b:a 192k output.mp4

720p web-optimized

-i input.mov -vf scale=-2:720 -c:v libx264 -crf 23 -c:a aac -movflags +faststart output.mp4

H.265 for smaller file size

-i input.mov -c:v libx265 -crf 28 -c:a aac -movflags +faststart output.mp4

Frequently Asked Questions

Is this MOV to MP4 converter really free?+

Yes, 100% free. No account, no trial, no daily limits. You can convert as many files as you want.

Are my files safe? Do you upload my video?+

Your files never leave your device. The conversion happens locally in your browser. Nothing gets sent to a server, and we don't store or see your videos.

What's the maximum file size I can convert?+

There's no file size limit. Since the conversion runs on your own device, the only constraint is your available memory. Most phones and laptops handle files up to a few GB without issues.

Does this work on iPhone and Android?+

Yes. It works in any modern browser on any device: Chrome, Safari, Firefox, Edge. Desktop, tablet, or phone.

Can I convert MOV to MP4 without losing quality?+

Yes. The default settings use H.264 encoding at a quality level that's visually identical to the original. If you want a perfect copy and your MOV already contains H.264 video, use the "stream copy" option for a lossless remux.

Why are my iPhone videos in MOV format?+

Apple uses MOV as the default video container on iPhones and Macs. It's their own format, originally designed for QuickTime. The video inside is usually H.264 or HEVC, but the MOV container doesn't play nicely on every platform.

What's the difference between MOV and MP4?+

Both are video containers that can hold the same types of video and audio. MOV is Apple's format and works best on Apple devices. MP4 is the universal standard that plays on basically everything: Windows, Android, web browsers, social media platforms, and smart TVs.

Can I convert multiple MOV files at once?+

You can convert files one at a time in the browser tool. If you need batch conversion for lots of files, the API handles that. Plans start at $9/mo.

Privacy

Your video files stay on your device the entire time. The conversion runs locally in your browser, so nothing gets uploaded to any server. We don't see your files, we don't store them, and we don't track what you convert.

Related Operations

Need to process at scale?

Automate this with the RenderIO FFmpeg API. Process thousands of files programmatically or through no-code video automation.

Get your API key