Convert WEBM to AVI online in seconds — free, with no sign-up. AVI is lossy and ideal for legacy video; usually converted to MP4 or WebM. Your files are encrypted and deleted automatically after 24 hours.
WEBM
WebM — A royalty-free web video format (VP8/VP9) that's smaller than H.264 at equal quality.
AVI
Audio Video Interleave — An older Microsoft container with large file sizes and limited modern support.
How to convert WEBM to AVI
- 1Upload your WEBM file
Click “Choose a file” or drag and drop your WEBM file onto the page — no sign-up or email needed.
- 2Convert to AVI
AVI is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your AVI file
Your AVI file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
WEBM vs AVI
| WEBM | AVI | |
|---|---|---|
| Full name | WebM | Audio Video Interleave |
| Type | Video | Video |
| Compression | Lossy | Lossy |
| Best for | efficient web video in Chrome, Firefox and Edge | legacy video; usually converted to MP4 or WebM |
Frequently asked questions
Does converting WEBM to AVI lose quality?
Both WEBM and AVI use compression, so re-encoding discards a little more data. For a single conversion the change is virtually invisible; just avoid repeatedly re-converting the same file.
What's the difference between WEBM and AVI?
WebM (WEBM) is lossy and best for efficient web video in Chrome, Firefox and Edge. Audio Video Interleave (AVI) is lossy and best for legacy video; usually converted to MP4 or WebM. Convert WEBM to AVI when you need a video for legacy video.
Is the WEBM to AVI converter free?
Yes — converting WEBM to AVI is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my WEBM files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert WEBM to AVI on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert WEBM to AVI?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert WEBM files to?
Besides AVI, you can convert WEBM to AAC, FLAC, FLV, GIF, JPG, M4A and more — see the full list of WEBM conversions below.
Other conversions
Last updated July 2026