MP4 → WebM
MP4 to WebM
Convert MP4 video to WebM with control over quality, resolution, and frame rate. Free and unlimited.
Drag & drop files here, or click to choose
.mp4,.mov,.webm,.mkv,.avi,.m4v,.mpg,.wmv,.3gp · up to 3 files
Files are sent over encrypted HTTPS, processed on our servers, and permanently deleted within 2 hours.
Need a different format? Open the full Convert Video to pick any output.
About converting MP4 to WebM
MP4 is the most widely supported video format, playable on virtually every device and platform. WebM is an open, royalty-free video format that's efficient and ideal for the web. Converting from MP4 to WebM swaps one for the other without changing the underlying content.
Re-encoding video is lossy, so we use quality-preserving defaults — you can still tune the resolution, quality, and frame rate before you start.
How it works
- Choose your MP4 file
- Pick your options
- Download the WebM
Frequently asked questions
How do I convert MP4 to WebM?
Upload your MP4 file above, and it converts to WebM in seconds. It's free, needs no sign-up, and there are no watermarks.
Is the MP4 to WebM converter free?
Yes — completely free with no limits, no account, and no watermarks.
Will converting MP4 to WebM reduce quality?
We use high-quality conversion settings to preserve as much fidelity as possible. You can often adjust quality options before converting.
Is it safe to convert MP4 files here?
Yes. Files are deleted automatically within 2 hours and are never read or shared.