WebM to MP4
Convert WebM video files to MP4 format for playback on all devices and apps. WebM is optimized for HTML5 web video but lacks support on iPhone, Apple TV, and many media players. MP4 with H.264 plays everywhere without additional software. No signup.
Updated June 2026
- 1Upload your WebM video
- 2Conversion runs instantly
- 3Download your MP4 file
Drop your video anywhere, click to browse
MP4, MOV, AVI, MKV, WebM, FLV, WMV, VOB
How to Use WebM to MP4
- 1
Upload your WebM video
Drag and drop your WebM file into the upload area, or click to browse and select it from your device. Nothing is sent to a server.
- 2
Conversion runs instantly
ToolBubble converts the video to MP4 directly in your browser — no waiting in an upload queue.
- 3
Download your MP4 file
Once processing finishes, the converted MP4 file downloads automatically to your device.
Frequently Asked Questions
What is WebM format?▼
Why doesn't WebM play everywhere?▼
Does converting WebM to MP4 reduce quality?▼
Is the conversion done in the browser?▼
Are WebM files from screen recordings supported?▼
How to use WebM to MP4
- 1
Upload your WebM video
Drag and drop your WebM file into the upload area, or click to browse and select it from your device. Nothing is sent to a server.
- 2
Conversion runs instantly
ToolBubble converts the video to MP4 directly in your browser — no waiting in an upload queue.
- 3
Download your MP4 file
Once processing finishes, the converted MP4 file downloads automatically to your device.
Frequently asked questions
Everything you need to know about webm to mp4.
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