WEBM to MP4
Convert WEBM to MP4 online and free
Step 1 - Select a file(s) to convert
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Max. file size 50MB (want more?)
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Step 2 - Convert your files to
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4.5 out of 5 based on 223 reviews
I tried it and immediately fell in love! It was so easy to use! After a couple conversions I bought the guys a cup of coffee. A couple more and decided this was too good to abuse! I joined! My life is so much easier!
TillieI had a huge, problematic file to convert that couldn't go through the usual automated conversion process. The Zamzar team responded quickly to my request for help, and they took the extra steps needed to do it manually.
PDinSFUsed it for over a year to convert my bank statements to csv files. Great quick app, increased my productivity a lot. Also, amazing support - always helped me quickly!
Agata WierzbickaI've used this product for years. And customer service is excellent. Just had an issue where I was charged and I didn't agree with the charge and they took care of it, even though they didn't have to.
JHI have been so thankful for Zamzar’s support from the beginning of the Pandemic to the present day. Their service is first rate & their helpfulness is always the best it could be.
MaryA very useful and professional site. The service is easy to use and the administrators are helpful and courteous.
David SheltonIt’s my first time using it. I had some complications doing it. I’m not very good at this. But I wrote to the company and I had a lot of help. I’m satisfied with customer service and with the app.
Ana SuárezI use Zamar whenever I need to convert audio and video files from multiple submitters to 1 uniform file format for Audio and Video Editing. I can do multiple large files in a short amount of time.
Christopher BeeGreat thanks to you all for helping me to get the OLD files converted correctly. 20 years, quite a long time, reviewing the files brings much memory to me. That's the best gift I received last year. Thank you all again.
Jiunn-Ru LaiI feel like Zamzar is an active team member, especially for projects that I work on where I am the workhorse and it saves so much time and frustration. I am spoiled with Zamzar, because they have set the bar for file conversion and customer service very high.
Deborah HermanTrusted by employees at these brands
Employees of some of the world’s most well-known brands rely on Zamzar to convert their files safely and efficiently, ensuring they have the formats they need for the job at hand. From global corporations and media companies, to respected educational establishments and newspaper publications, employees of these organisations trust Zamzar to provide the accurate and reliable conversion service they need.












Your files are in safe hands
Zamzar has converted over 510 million files since 2006
For every 10,000 files converted on Zamzar, we'll plant a tree. By using Zamzar you are helping to make a difference to our planet
We're committed to regular charitable giving. Each month we donate at least 2% of our company profits to different charities
From your personal desktop to your business files, we've got you covered
We offer a range of tools, to help you convert your files in the most convenient way for you. As well as our online file conversion service, we also offer a desktop app for file conversions straight from your desktop, and an API for automated file conversions for developers. Which tool you use is up to you!
Want to convert files straight from your desktop?
Get the AppFully integrated into your desktop
Convert over 150 different file formats
Convert documents, videos, audio files in one click
Need conversion functionality within your application?
Explore the APIOne simple API to convert files
100s of formats for you to choose from
Documents, videos, audios, images & more...
Why choose Zamzar?
With Zamzar, file conversions are easy, reliable and convenient, so you can quickly convert your documents, images, videos, and more, to the formats you need. With faster downloads of converted files, and friendly and helpful support when you need it, you’ll have everything you need to work with your files.

Privacy
We take privacy incredibly seriously at Zamzar, and have a detailed privacy policy that you can read here.

Highly Reputable
Zamzar was used by the creator of PowerPoint to help him convert a very old PowerPoint into something that could be opened.

Millions of Conversions Monthly
Zamzar's popularity grows daily and so does the number of files that get converted!

User Experience
We recognise you want your files quickly, securely and converted correctly. That’s why we have a real-time conversion tool and why you don't need an account with us.
Tools to suit your file conversion and file compression needs
You’ll find all the conversion and compression tools you need, all in one place, at Zamzar. With over 1100 file-conversion types supported, whether you need to convert videos, audio, documents or images, you’ll easily find what you need and soon have your files in the formats and sizing that work for you.
WEBM Video Format WEBM Converter
The WebM file format is a video format that was developed by On2 Technologies (who were acquired by Google in 2009). The format is a high quality and open format but, crucially, is small in size. WebM files have grown in popularity since HTML5 became standard for sites like YouTube and for popular devices like the iPhone.
The WebM format is based on the Matroska MKV format, which is a multimedia container format. WebM, like MKV, is made up of audio, video and subtitles in just a single file, with each element having its own type of encoding.
WebM videos can be quite difficult to open because most popular video players aren't able to play this format without first converting the file or installing specific software to play the file; a notable exception is the VLC media player, which is able to play most WebM files.
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MP4 Video Format MP4 Converter
MP4, sometimes called MPEG4, is one of the most common video formats. MP4 was developed to be easily played and shared. It was originally developed by the Moving Picture Experts Group (MPEG) but has become an ISO standard, meaning that it’s now maintained by the International Organisation for Standardization. As MP4 is a standardised format, it will normally play easily on most devices and media players, including Windows Media Player, QuickTime, and VLC. MP4 is usually the preferred format for uploading videos to YouTube, Vimeo or other websites.
MP4 videos are made up of video and audio elements that are compressed separately. The video part is usually compressed with MPEG-4, and the audio is usually compressed using AAC, which is the audio format associated with iTunes. Because both file elements are compressed, MP4s normally have a smaller file size than many other video formats, but still maintain relatively high quality for sharing online.
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How to convert a WEBM to a MP4 file?
- 1. Choose the WEBM file that you want to convert.
- 2. Select MP4 as the the format you want to convert your WEBM file to.
- 3. Click "Convert" to convert your WEBM file.
Convert from WEBM
Using Zamzar, it is possible to convert WEBM files to a variety of other formats:
WEBM to 3GP WEBM to 3G2 WEBM to AAC WEBM to AC3 WEBM to AVI WEBM to FLAC WEBM to FLV WEBM to GIF WEBM to IPAD WEBM to IPHONE WEBM to IPOD WEBM to MP3 WEBM to MOV WEBM to MP4 WEBM to MPG WEBM to OGG WEBM to WAV WEBM to WMVConvert to WEBM
Using Zamzar, it is possible to convert a variety of other formats to WEBM files:
264 to WEBM 3G2 to WEBM 3GP to WEBM 3GPP to WEBM ASF to WEBM AVI to WEBM F4V to WEBM FLV to WEBM GVI to WEBM M2TS to WEBM M4V to WEBM MKV to WEBM MOD to WEBM MOV to WEBM MP4 to WEBM MPG to WEBM MTS to WEBM RM to WEBM RMVB to WEBM TS to WEBM VOB to WEBM WMV to WEBMFrequently asked questions
If you’ve got any questions about converting or compressing files with Zamzar, we’re happy to help! We’ve answered a few commonly-asked questions below, to get you started, and you can find out more information about file conversion and compression with Zamzar, in our Help centre.
One of the easiest ways to convert a WEBM file to MP4 is by using file conversion software or an online conversion tool like Zamzar. The three-step tool on Zamzar’s website lets you securely upload a WEBM file, convert it to MP4 and then download the new video. Because it’s online there’s no extra software to install, and you can convert files in real time. It’s also possible to convert videos to different formats using some media players like VLC.
To save WEBM as MP4 you will need to convert your file using either video-conversion software or an online conversion tool. Zamzar has a free and user-friendly online tool on its website – upload a WEBM file, select MP4 as the format to convert it to, and then download your new video. Alternatively, you could install VLC media player on your computer and use this to convert your file to MP4.
MP4 is generally considered to be a higher-quality video format than WEBM, but WEBM is still good for streaming or sharing. If you need to convert a WEBM file to MP4 for editing or playing, it’s easy to use an online conversion tool like Zamzar to do that. It’s also possible to play or convert WEBM files using VLC media player. The advantage with Zamzar is that you don’t need to install any extra applications – simply upload your WEBM video, click to convert it, and then download it as an MP4 file.
There are a range of free WEBM to MP4 convertors. VLC media player lets you play and convert video files between different formats. However, one of the quickest free ways you can convert video files from WEBM to MP4 is by using Zamzar’s three-step online tool. You can convert files in real time by uploading them to Zamzar’s secure website, selecting MP4 and then downloading your converted video files.
As WEBM and MP4 are different video file formats it’s not possible to convert them by renaming the file extension. However, there is an easy way of converting WEBM files to MP4, which is by using online conversion tools like Zamzar. Just upload a WEBM video file to the three-step tool on Zamzar’s website, click to convert it to MP4 format, and then download the new video file.