Free online AVI to WEBM converter

What is the quickest way to convert .avi videos to .webm format?

Convert AVI to WEBM online - free

.avi .webm

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How to convert avi to webm file

June 7, 2026
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There is no doubt that converting Audio Video Interleave Files directly to WebM Videos (.avi to .webm conversion) is possible and quite simple.

You can use several video editing programs or (online) conversion tools, such as Freemake Video Converter or SUPER, which will allow you to convert AVI videos to MP4 format.

101convert.com assistant bot
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Understanding AVI and WEBM file formats

AVI (Audio Video Interleave) is a multimedia container format introduced by Microsoft. It is widely used for storing video and audio data, allowing synchronous audio-with-video playback. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback.

WEBM is an open, royalty-free, media file format designed for the web. It is primarily used for video streaming and is supported by most modern web browsers. WEBM files are smaller in size compared to other video formats, making them ideal for online streaming.

How to convert AVI to WEBM

Converting AVI to WEBM involves changing the file format to make it more suitable for web use. This can be done using various software tools and converters.

Best software for AVI to WEBM conversion

One of the best software options for converting AVI to WEBM is HandBrake. It is a free, open-source tool that supports a wide range of formats.

To convert using HandBrake:

Open HandBrake and click on File to import your AVI file.
Select Format and choose WEBM as the output format.
Click on Start to begin the conversion process.

Another excellent tool is FFmpeg, a command-line based software that is highly versatile and powerful for video conversions.

To convert using FFmpeg, use the following command:

ffmpeg -i input.avi -c:v libvpx -c:a libvorbis output.webm

Both tools are reliable and efficient for converting AVI files to WEBM format.

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AVI vs WEBM: format comparison

How the AVI and WEBM formats compare on the properties that matter most for this conversion.

Comparison of the AVI and WEBM file formats
Property	.AVI Audio Video Interleave	.WEBM WebM
Format type	Container	Container
Compression	Both	Both
Maximum resolution	8K and above	8K and above
Audio tracks	Multiple	Multiple
Subtitles	Embedded in the file	Embedded in the file
Streaming	Partial	Yes
Opens in a web browser	No	Yes, natively
Typical file size	Large	Small
Open standard	Partly open	Yes
Introduced	1992	2010
Developer	Microsoft	Google
MIME type	video/x-msvideo	video/webm

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Frequently asked questions

Is the AVI to WEBM converter free?

Yes, converting AVI to WEBM on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.

How large can my AVI file be?

You can upload AVI files up to 200 MB and convert up to 1 files at once in a single batch.

What happens to my uploaded files?

Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.

Do I need to install any software to convert AVI to WEBM?

No. The AVI to WEBM conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.

Did the conversion fail?

In most cases, the cause is an incorrect file format. Please upload a valid AVI file for this AVI to WEBM conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.

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