Top 10 Best Free WebM Converters for Desktop & Online

When facing format incompatibility problems during playback, editing, uploading, etc., changing the video format is a practical solution. In some circumstances, you may want to convert between WebM and other formats for playback on different devices since the WebM format cannot supported by all devices and platforms.

In this post, we compiled 10 of the best free WebM converters online and offline for you to choose from. If you hope to convert files for free, just keep reading.
Get the best free WebM video converter for Windows here:

Carina Carina | Updated on Jan 09, 2024

Ten Best Free WebM Converters

1. WonderFox Free HD Video Converter Factory

2. Freemake Video Converter

3. Format Factory

4. VLC Media Player

5. HandBrake

6. FFmpeg





FAQs about WebM Files

1. WonderFox Free HD Video Converter Factory

Free HD Video Converter Factory Pro

Supported System: Windows only

WonderFox Free HD Video Converter Factory is one of the best free video converters that supports nearly all formats conversion with its powerful format support. . It can not only convert WebM to MP4, AVI, MKV, MP3, WAV, iPhone, iPad, etc. for free but also convert various video files to WebM.

This video converter supports HD video conversion for free and can convert WebM files with the best quality preserved. During the conversion, you can do some further edits like cutting, merging, compressing, etc. It also allows you to modify the specific video & audio parameters. Moreover, you can even use it to download online videos to MP4 or other wanted formats.

Download WonderFox Free HD Video Converter FactoryDownload WonderFox Free HD Video Converter Factory

Main Features of Free HD

100% clean, free, and simple to use
Support converting, editing, and downloading
No watermark and no lag
No restrictions on file size and conversion times

2. Freemake Video Converter

Freemake Video Converter

Supported System: Windows only

If you just want to convert WebM files to MP4 or other formats, you can also try Freemake Video Converter. It is a powerful video converter that allows you to convert WebM to popular formats and device presets for free. But it doesn’t support WebM format output, so you cannot convert other files to WebM with it. Nevertheless, being a highly recommended video converter, Freemake Video Converter supports large HD video and movie conversions with no problem.

Apart from converting WebM files, Freemake supports a variety of other features like editing, DVD ripping, etc. Note that some features are behind a paywall. Also, the Freemake logo will be added to the video if you use the free version of the Freemake Video Converter.

Main Features of Freemake:
Support 500+ conversions and HD output quality for free
Add subtitles and convert the video with subtitle
Rip and convert DVD and Blu-ray disc
Edit video and modify output parameters

Download Freemake Video Converter

3. Format Factory

Format Factory

Support System: Windows only

Format Factory is an ad-supported free video converter for Windows that cannot be ignored. It can convert WebM files to many other formats as well as convert other videos to WebM. Besides serving as a WebM converter, it supports converting other video, audio, and picture files. You can even use it to rip DVDs and CDs. More features like compressing, editing, etc. are also supported.

Format Factory can convert multiple video files at the same time. But note that it has much adware bundled. So be careful during the installation process.

Main Features of Format Factory:
Freeware to convert video, audio, image, DVD, CD
Supports batch file conversion
Edit video & audio files and repair damaged files
Built-in with multi-languages

Download Format Factory

4. VLC Media Player

VLC Media Player

Supported System: Windows, Mac, Linux, Android, Unix, iOS, etc.

VLC is most known as a free and open-source media player. But it can actually handle various multimedia tasks, including changing the video formats. Users can definitely use it as a handy video converter to convert WebM files to different formats and vice versa. The provided output settings customization can help you adjust the video and audio quality, embed subtitles, and more.

However, primarily designed as a player, you may encounter some problems during the VLC conversion like converted files with no audio, choppy/stutter, etc.

Main Features of VLC Media Player:
Safe, clean, and totally free
Powerful format support for input and output files
Offer wide-ranging features
Available on all operating systems

Download VLC Media Player

5. HandBrake


Supported System: Windows, Mac, Linux

HandBrake is a popular free and open-source video transcoder for converting any video files to MP4(M4V), WebM, and MKV. You can use it to convert between WebM and other files. It also supports batch scanning and 4K video conversions. Moreover, it provides multiple presets for you to convert according to different situations. Before the conversion, HandBrake also allows you to configure dimensions, filters, and more. Some editing features like trimming and cropping videos, removing audio tracks, etc. are also supported.

Apart from being a free WebM converter, HandBrake also supports ripping DVDs and Blu-ray discs. But keeps in mind that it can only rip DRM-free DVDs.

Main Features of HandBrake:
Simple interface and easy workflow
Many presets for different needs
Supports HD video conversion up to 4K
Able to rip DVDs and Blu-ray discs

Download HandBrake

6. FFmpeg

FFmpeg WebM Converter

Supported System: Windows, Mac, and Linux

For users who are familiar with CCL, you can really give FFmpeg a try. It is also a free and open-source command-line tool with powerful capabilities for processing various video and audio files. This tool can perform video conversions between WebM and other videos. Moreover, it can convert files without re-encoding which maintains a super-fast conversion speed and lossless output quality.

Besides being used for converting video files, it can also help you improve video quality, embed subtitles, compress file size, and more.

However, since it is a command-line based tool, novice users may feel difficult to get started with. But you can search for an FFmpeg GUI as an alternative or search for some tutorials online.

Main Features of FFmpeg:
Command-line based but flexible conversion process
Support all format conversions and allow batch conversion
Convert files without re-encoding
Consists of a large suite of libraries and programs for recording, converting, and streaming audio and video

Download FFmpeg

The best 6 free WebM converters listed above are available for free download on your Windows, Mac, and even mobile devices. Apart from the desktop WebM converter software, there are various online video converters that can also help with WebM video conversion as well as converting video to WebM. Continue reading if you hope to convert files online without downloading any programs or plug-ins. The following recommends some free online WebM converters for you to try.


CloudConvert WebM Converter

CloudConvert is a popular file converter among most online conversion tools. It can convert video, audio, image, and other media files. To convert videos to WebM or convert WebM videos, just simply select the input and output formats, upload the source files, and hit the “Convert” button to start conversion right away.

Although being an online video converter, CloudConvert is security-guaranteed and supports high-quality conversions. It also allows you to trim videos, embed watermarks, add subtitles, and modify the video and audio parameters. Moreover, it is an online large file converter that enables you to convert video files up to 1 GB for free.

Main Features of CloudConvert:
Support large file conversion and high-quality conversion
200+ formats supported including audio, video, document, image, and more
Able to edit video online and adjust output settings

Visit CloudConvert website and start conversion



Online-Convert is also a popular online converter that supports WebM file conversion. It lists all the video format conversion links on its video conversion page. You can just choose the link to want to convert videos, upload a source file from local drives, cloud services, etc., and click “Start” to initiate the conversion process. Then you can download the converted files or choose to upload the converted files to the cloud. Before the conversion, you’re also allowed to adjust the video and audio settings and edit videos by cutting, cropping, rotating, mirroring, etc. according to your needs.

However, it may not be suitable for users who want to convert large files since its free plan only allows the maximum video file size under 100 MB for each task.

Main Features of Online-Convert:
Super-easy interface and simple conversion process
Edit videos and adjust output video & audio settings
Provide various tools to convert and compress other media files

Visit Online-Convert website and start conversion


FreeConvert Online WebM Converter

FreeConvert is also an easy and high-quality free online WebM converter that can convert video to and from WebM format. You can upload files from your computer, cloud drives, and even URLs. Then simply select the output format and press “Convert” to start the conversion. It also allows you to output video & audio settings and trim the video length.

FreeConvert supports large file conversion as well since it accepts uploads with a maximum file size of 1 GB. Meanwhile, it allows batch conversion with a total file size of less than 1 GB.

Pay attention to the annoying advertisements loaded on the conversion interface.

Main Features of FreeConvert:
Support large video conversion up to 1 GB
Allow customizing video and audio output settings
Available for other audio, image, document, etc. conversions

Visit FreeConvert website and start conversion


Webmtomp4 Online WebM Converter

If you just want to change WebM into MP4 format online, you can also give a shot. This online video converter tool mainly focuses on video to MP4 conversion. So you can only use it to convert WebM or other video to MP4. Compared with other online programs, it has no additional features. But as a dedicated free online WebM video converter, it supports changing the output video settings, including video codecs, bitrate, resolution, and others. You can also customize the output file size to compress videos.

However, this online tool is also ad-supported and you can see some misleading advertisements during the conversion. Nevertheless, it supports video files of any size and is completely free to use.

Main Features of Webmtomp4:
Totally free and simple to use
Support video conversion at any size
Able to compress video and customize video settings
Multi-languages supported

Visit Webmtomp4 website and start conversion

FAQs about WebM Files

1. Can I convert WebM to MP4 for free?

Yes. You can use any of the listed free WebM converters in this post to efficiently convert WebM files to MP4 for free.

2. How do I convert WebM to MP4 for free in Windows 10?

To free convert WebM to MP4 in Windows 10, you can try WonderFox Free HD Video Converter Factory. It is the perfect program designed for Windows to free convert WebM to MP4 as well as other conversions.

Free Download

Compatible with Windows

100% Clean & Safe

Free Download

3. How can I open WebM files on Windows 10?

you can try a VLC media player to directly open WebM videos. If you hope to play MOV with Windows 10 default player - Movies & TV, you may need to install the needed codec or convert the WebM file format.

You can find more WebM players on Windows in this post: 10 Best WebM Players to Play WebM Files on Windows.

Bottom Line

It is an easy task whether you want to convert to or from WebM files once you get the suitable converter tool. And this post shares the top ten free WebM converters for you to choose from. Hope you can find the best free WebM converter that suits your needs after reading this post. Now, pick your favorite conversion tool and perform the conversion to get your desired files.

Thank you for reading. Have a nice day!

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