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WebM to MP4 converter

Turn WebM videos into MP4 files in a few clicks, with the output format already set.

Drop a video here

WEBM · up to 100 MB per file · You can also paste files with Ctrl + V

Files are deleted after 2 hours. You can delete them right after downloading.

How to use WebM to MP4 converter in 3 steps

  1. Upload the WebM video

    Drop the file on the page, or choose it from your device, Google Drive or a direct download link.

  2. Check the settings

    MP4 is already selected as the output. Keep the original resolution or choose 1080p, 720p or 480p for a lighter file.

  3. Convert and download

    Start the conversion, follow the progress bar, then download the MP4 file or save it to Google Drive.

Guides

A short read first gets you the right result on the first try.

See all on the blog See all
Video to MP3

Video to MP3: pull the audio out in the right format

Extracting the sound cannot make it better than the original. Your job is to pick the format and bitrate that are just enough for how you will listen or what you will do next.

2 min read Compress video

Compress video: smaller files that still look good

A video's size is its bitrate multiplied by its length. Lower resolution saves the most, trimming saves the most reliably, and the quality level fine-tunes the rest.

2 min read Video to GIF

Animated GIF to PNG: What You Can Convert

You can turn an animated GIF into a PNG frame, a PNG sequence, or APNG, depending on what you need.

6 min read

Features

WebM files are easy to save from websites and screen recorders, but many editors, QuickTime and older phones and TVs will not open them. This page is set up for exactly that: upload your WebM video and BigQTools converts it to MP4 on its servers, keeping the file name and changing only the extension. If a smaller file would help, pick 1080p, 720p or 480p before you start; otherwise the original resolution is kept.

  • Preset for WebM to MP4, so there is no format menu to get wrong.
  • Resolution options: original, 1080p, 720p or 480p.
  • The file name is kept; only the extension changes to .mp4.
  • Works in any modern browser on phones and computers, with no app or account.
  • Files travel over HTTPS and are deleted automatically after 2 hours.

Frequently asked questions

Does converting WebM to MP4 lose quality?

The video is re-encoded at a high quality setting, so most people cannot see a difference. Keep the original resolution for the sharpest MP4 file, or choose 720p or 480p when a small file matters more.

What is the difference between WebM and MP4?

WebM is an open video format created by Google for the web, used by browsers, YouTube and many screen recorders. MP4 is the most widely supported video format: it plays on nearly every phone, computer, smart TV and website.

Can I convert WebM to a format other than MP4?

Yes. The “Convert video” page takes the same file and lets you choose MP4, WebM, MOV, MKV or AVI.

Is there a file size limit?

Each video can be up to 100 MB. For longer recordings, trim or compress the clip first, then convert it here.

Other conversions

Convert video 3GP to MP4 converter AVI to MP4 converter FLV to MP4 converter M4V to MP4 converter MKV to MP4 converter MOV to MP4 converter MP4 to MOV converter MP4 to WebM converter MPEG/MPG to MP4 converter TS to MP4 converter WMV to MP4 converter
Compress video Shrink videos for messaging apps, email and social media. Trim video Keep just the part you need, cut to the exact frame. Video to MP3 Save the soundtrack of a video as MP3, M4A or WAV. Merge videos Join several clips into one continuous video. Video to GIF Turn a short video clip into an animated GIF. Change video speed Speed up or slow down a video with matching audio.