1
Upload your WEBM
Select the file you want to process from your device.
Free online video tool
WEBM to MP4 Converter
Convert WEBM videos to the widely supported MP4 format for free. ToolNova performs the conversion in your browser.
FreeFast processingSecure
Drop your file here
or click to select it from your computer
Maximum file size: 50 MBProcessing runs on your device or the secure ToolNova server, depending on the tool; each tool page explains the method
3 easy steps
How to use WEBM to MP4 Converter
2
Convert to MP4
Let ToolNova automatically process your file.
3
Download MP4
Download the generated file to your device.
ToolNova
WEBM to MP4 Converter made easy
Convert WEBM videos to the widely supported MP4 format for free. ToolNova performs the conversion in your browser. Complete the process directly from your browser without installing complicated desktop software.
MP4 output
Download the generated file to your device when processing is complete.
Fast processing
Upload your file and complete the process in just a few steps.
Secure connection
File transfers are performed over HTTPS.
Free tool
Use ToolNova tools for free.
Guide
What you should know about WEBM to MP4 Converter
WEBM to MP4 converts WEBM videos into MP4 for broader compatibility with phones, computers and media applications. Processing runs directly in your browser.
Why convert WEBM to MP4?
MP4 has very broad device and application support. Converting WEBM to MP4 can improve compatibility when a WEBM file will not open in a specific app.
What is the difference between WEBM and MP4?
WEBM is an open format focused on web media, while MP4 is more widely supported across phones, desktop apps, TVs and social platforms.
Is the video re-encoded during conversion?
Yes. ToolNova may re-encode the video to create a compatible MP4 output, so processing can take some time.
Is my WEBM video uploaded to a server?
No. WEBM to MP4 conversion is performed in your browser using FFmpeg WebAssembly.
Using WEBM video on more devices
WEBM is common on the web, but some editing applications, devices and upload systems are more compatible with MP4. WEBM to MP4 can make the video easier to use in those workflows.
Detailed tool guide
WEBM to MP4: How do you convert WEBM video to MP4?
ToolNova WEBM to MP4 converts WEBM video into MP4 for broader device and application compatibility.
MP4 is widely supported by messaging apps, video editors, mobile devices and many sharing platforms.
Re-encoding may be required during conversion. Video length and resolution can affect processing time.
ToolNova uses HTTPS when file transfer is required. For confidential or corporate files, also follow your organization’s data security and sharing policies.
Formats and compatibility
Which file formats work with WEBM to MP4?
WEBM
WEBM input
Use a WEBM video as the source.
MP4
MP4 output
Create the video in widely compatible MP4 format.
Use cases
When is WEBM to MP4 useful?
Mobile sharing
Convert WEBM into MP4 for broader mobile compatibility.
Video editing
Prepare MP4 for editors that require it.
Messaging
Convert to a format more commonly accepted by messaging apps.
Archive compatibility
Store videos in a common MP4 format.
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