Convert AVI to WebM in bulk.
Large AVI files are supported.

Convert AVI Learn more about AVI files to

Video
AVI to 3G2 Select 3G2 as the output format AVI to 3GP Select 3GP as the output format AVI to AMV Select AMV as the output format AVI to FLV Select FLV as the output format AVI to MKV Select MKV as the output format AVI to MOV Select MOV as the output format AVI to MP4 Select MP4 as the output format AVI to MPG Select MPG as the output format AVI to MXF Select MXF as the output format AVI to OGG Select OGG as the output format AVI to VOB Select VOB as the output format AVI to WebM Select WebM as the output format AVI to WMV Select WMV as the output format
Audio
AVI to AAC Select AAC as the output format AVI to AC3 Select AC3 as the output format AVI to AIFF Select AIFF as the output format AVI to FLAC Select FLAC as the output format AVI to M4A Select M4A as the output format AVI to MP3 Select MP3 as the output format AVI to OPUS Select OPUS as the output format AVI to WAV Select WAV as the output format AVI to WMA Select WMA as the output format
Image
AVI to AVIF Select AVIF as the output format AVI to BMP Select BMP as the output format AVI to GIF Select GIF as the output format AVI to ICO Select ICO as the output format AVI to JPG Select JPG as the output format AVI to PNG Select PNG as the output format AVI to TIFF Select TIFF as the output format AVI to WebP Select WebP as the output format


How to convert AVI to WebM?

You can convert AVI to WebM with MConverter in three easy steps:
  1. Choose AVI files from your device or cloud storage
    At the top of this page, drag and drop your AVIs.

    Alternatively, click on the Browse box to select files with your device's file picker, or copy and paste an AVI file by pressing Ctrl+V (or ⌘+V on Mac).

    MConverter can easily import AVIs from Google Drive, OneDrive, and Dropbox.

    Converting a folder with AVI files to WebM is also supported: simply paste, drag and drop it, or use the ADD FOLDER button.
  2. Click or tap on WebM from the list of target formats
    You could also use the search box at the top right to quickly find the format you need, whether it's WebM or something else.
  3. Get your WebM files after MConverter has finished processing them
    Click on DOWNLOAD ALL to save your WebMs to your default downloads folder, or select SAVE TO to choose another location.

    You can also configure automatic file downloads during the conversion process or in the settings menu. When enabled, each WebM file is downloaded as soon as its conversion is complete, without waiting for the others to finish.

    If supported by your device, you'll see a Share icon, allowing you to directly send converted files to other apps.

About the formats

File extension .avi
Category Video file formats
Developed by Microsoft
Mime type video/avi

Format description

AVI is a popular video format, created in the 90’s by Microsoft. It is short for Audio Video Interleave. When compared to other commonly used video formats, such as MOV and MP4, AVI files are usually much larger in size. This is because AVI uses less efficient compression.

To free up space on your device, you can convert AVI videos to more efficient formats like MP4 and WebM.
File extension .webm
Category Video file formats
Developed by Google
Mime type video/webm

Format description

WebM is a relatively recent video file format for storing high-quality, highly compressed videos with very little quality loss. Because it is also royalty-free, it is frequently used on the web for HTML5 video playback. Its container is based on a Matroska (MKV) profile. It used the VP8 and VP9 technologies for video, and Vorbis and Opus for audio.

AVI to WebM Converter Rating

4.8
8 votes

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Rated Excellent (4.8) on Trustpilot
I love MConverter. It's fast, efficient and accurate. Suzan Vaughn
Awesome --- quick and error free. Exactly what I needed. Mark Evans
Using MConverter is like having a magic wand for file conversions. Marcin Otta
High quality. Did the job. And did it well. Highly recommend. Cody H
Totally awesome: I converted a short MP4 to png image sequence Xander Treffers
The only converter that gave awesome quality! Ksenia Novakova
Click. Upload. Choose format. Download. Done. Thunderxbolt

Real stories from people who rely on MConverter

Arturo
Sep 25, 2025
I love that I can just convert my files from File Explorer, no need opening the app first, just right click and "open with" or the "Share" button and choose "MConverter" immediately or drag the file to MConverter home screen if I'm in a rush. Even though it's a web wrapper, it still serves a distinct purpose, compared to other website converters.
Fred Janning
May 5, 2025
What I appreciate most is how user-friendly it is. It handles just about any file conversion I throw at it, quickly and efficiently. It's become an indispensable tool in my daily workflow. The fact that it supports so many formats is a huge plus, and it's saved me a lot of time and hassle. It's a solid, reliable tool, and I'd definitely recommend it to anyone who needs to convert files regularly.
TorQue MoD
Mar 31, 2025
I love this converter! It's free and easy to use, and it successfully converted .mov with transparent background to .png with transparent background in only a few seconds. It will now live permanently in my Tools bookmark folder :)
Roger StH
Nov 28, 2024
Excellent tool, it does exactly what it says it will do. It does it really quick. No fuss, just upload your file in the web interface, select the output and the download of your formatted file begins almost immediately. Super fast !
Ashley
Oct 16, 2024
AMAZING APP! I am so glad I found it!! It actually converts WEBM files without the weird bleeds! It's the only app I use to convert cute emotes from any site! I have been looking for years to find an image/gif converter but all the ones I found didn't convert emotes correctly. MCONVERTER DOES!! Hands down, best app!
Nadeem Khan
Sep 30, 2024
Had a problem in opening rtf files on my cell while in a meeting, then searching Google and fortunately found mconverter and that solved my problem within seconds for free. Indeed the entire teams deserve to be highly appreciated for this incredible software. Hats off to all of them. wishing you more successful developments in future. Stay blessed ❤️
George Moore
Sep 12, 2024
BRO I HAVE BEEN TRYING FOR LIKE 5 YEARS TO GET A VIDEO FILE TO WORK ON MY CHEAP RUIZU MP3 PLAYER TO WORK, AND THIS THING DID IT PERFECT!!!!! 10/10
Jelena Arbutina
Sep 3, 2024
I tried several programs to convert AI files to PNG, but only this program managed to convert both the text and the image exactly as in the original. The other programs transformed the text using their own fonts, which were not the ones originally used.
Lorenzo B.
Apr 18, 2025
(translated)
An exceptional product, with a fantastic, simple, immediate effective UX. A spatial combination of which format can be converted to which other format. A fast and flawless execution, with a very high quality of the output that maintains practically all the characteristics of the original document.
David I.
Dec 20, 2023
What truly sets MConverter apart is its Swiss Army knife-type functionality. This tool can convert anything to anything with just a click of a button. It doesn't matter whether you're working with audio, video, documents, images, or any other file type - MConverter has got you covered.
Whitney
Aug 28, 2024
(updated)
This app is exactly what I asked for and is super easy to use. I am not a big time computer wizard so I need apps that do what they say do in a straightforward process. This app does just that! I love it and will continue to use it and will advise others of it as well. Good job to the owners/developers! And, sincere THANK YOU!
Daniel Awesome
Aug 20, 2024
Finally found a converter that did webp to gif without killing the animation. I tried around 12ish different converters and this is the only one that works so far. Hats off to you dev, thank you.
Antonio Hurtado
Mar 16, 2022
The most fantastic, fastest, best and easiest file converter I have ever had installed on my mobile. You deserve all the praise possible, more than happy, I am super grateful, I will always be grateful to you for this super fantastic application. This super fantastic app has literally saved my life, now I can read novels and books in any format, including pdf, which has very small print, in epub format👏
matt32
Apr 6, 2023
AMAZING! This is the perfect file converter! The first thing I used it for was to convert WMV files to MP4 and it worked flawlessly. I then realized it supports all kinds of formats and is basically unlimited. The UI is very user-friendly and super easy to navigate. Incredible app, MConverter!
지나가던인간
Sep 22, 2021
(translated)
Although there are occasional errors, I was very impressed with the efforts of the developers to receive feedback from users and to improve the inconveniences quickly. I will be using it more often in the future.
Scott
Apr 28, 2022
I grab the webm I want to move to my phone and drag it over to the app, I click the type of file I want the webm converted to (mp4), it does it in 10 seconds. easiest 5/5 of my life.

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