WebM to MP4 Converter

Make an MP4 copy of a WebM video for players and devices that prefer MP4. WebM is a web-oriented format, while MP4 is often supported by a broader range of devices and editing apps.

or drag and drop files here. Up to 50 MB each.

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Temporary files removed after responseSecure processingNo signup

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VIDEOConvert MP4 to WebMCreate a WebM copy of an MP4 video for web workflows and players that support WebM.VIDEOMOV to MP4 ConverterCreate an MP4 copy of a MOV video for apps and devices that prefer the MP4 container.VIDEOMKV to MP4 ConverterCreate an MP4 copy of an MKV video for apps and devices that prefer MP4.

WebM to MP4 Converter: format and use cases

WebM is a web-oriented format, while MP4 is often supported by a broader range of devices and editing apps. The available codecs and the conversion server's FFmpeg support affect playback and processing.

Why convert WebM to MP4?

MP4 can improve compatibility with a player or workflow that accepts that video container.
Playback still depends on codecs inside the file and the capabilities of the target device.
Video processing time and output size depend on resolution, duration, codecs, and server load.

WEBM vs MP4

Compare typical format characteristics before choosing an output. Actual file size and quality depend on the source content and conversion settings.

Feature	WEBM	MP4
Typical file size	Depends on codec, bitrate, and duration	Depends on codec, bitrate, and duration
Quality and features	Web-oriented video container	Container supports various codecs
Compatibility	Supported by modern browsers and players	Broadly supported; codec dependent

How to convert WebM to MP4

Choose a WEBM file from your device or drag it into the upload area. The maximum upload size is 50 MB.
MP4 is selected as the output format. Start the conversion when your file is ready.
Download the converted file when processing is complete.

Tip: Video uploads are limited to 50 MB and processing has a two-minute deadline. Keep the source WebM until you verify the MP4 in your target app.

Frequently asked questions

Will converting WebM to MP4 make the video compatible with all devices?

MP4 is widely supported, but exact playback depends on the codecs inside the file and the device.

Can I convert a large WebM file?

The upload limit is 50 MB, and server-side video conversions have a two-minute processing deadline.

Is this webm to mp4 tool free?

Yes. This converter is free to use and does not require an account.

Can I convert multiple files at once?

This tool processes one file per conversion. Convert each file separately.

How large can my upload be?

The maximum upload size for this conversion is 50 MB.

What happens to my uploaded file?

Server-side conversions use temporary files that are removed after the response finishes. Browser image conversions are processed locally. See the privacy page for details about deployment logs and optional OCR providers.

Looking for a different format? Browse the related converter category.