# Convert AVI to WebM > Convert AVI to WebM online for free. Runs entirely in your browser, so your files never leave your device. Fast batch conversion, no sign-up, no watermarks. URL: https://www.converterrr.com/avi-to-webm - Runs in the browser with FFmpeg (WASM): files are not uploaded, and no credits are used. - Engines: FFmpeg (WASM) (browser), FFmpeg (cloud). - API: available. `POST /api/v1/jobs` with `"output_format": "webm"` (paid plans). - More: [Video converter](https://www.converterrr.com/video-converter), [AVI converter](https://www.converterrr.com/avi-converter), [Compress AVI](https://www.converterrr.com/compress-avi). ## How to convert AVI to WebM 1. **Add your AVI files.** Drag and drop AVI files onto the converter, paste them, or click to browse. You can add several at once. 2. **Choose WebM.** WebM is already selected. Open Options if you want to change quality, size or metadata. 3. **Convert.** Click Convert. Your files are converted right in your browser in seconds. 4. **Download your WebM.** Download each WebM file, or everything at once as a ZIP. ## Good to know - AVI files are typically used for older camcorder footage and legacy video archives, while WebM is best for video on websites and in browsers. - This conversion runs on FFmpeg (WASM), running locally in your browser — nothing is uploaded and it works even on slow connections. ## AVI vs WebM | | AVI | WebM | | --- | --- | --- | | Full name | Audio Video Interleave | WebM Video | | Type | Video | Video | | Extensions | .avi | .webm | | MIME type | video/x-msvideo | video/webm | | Best for | older camcorder footage and legacy video archives | video on websites and in browsers | | Properties | legacy format | lossy compression, open standard | **AVI:** AVI is Microsoft's classic video container from 1992. It's still found on older cameras and archives but lacks modern features. **WebM:** WebM is an open, royalty-free video format designed for the web, using VP8/VP9 or AV1 video with Opus audio. The other way around: [convert WebM to AVI](https://www.converterrr.com/webm-to-avi). ## Related conversions - [WebM to AVI](https://www.converterrr.com/webm-to-avi) (in the browser) - [AVI to MP4](https://www.converterrr.com/avi-to-mp4) (in the browser) - [MP4 to WebM](https://www.converterrr.com/mp4-to-webm) (in the browser) - [AVI to MP3](https://www.converterrr.com/avi-to-mp3) (in the browser) - [MOV to WebM](https://www.converterrr.com/mov-to-webm) (in the browser) - [AVI to WebP](https://www.converterrr.com/avi-to-webp) (in the browser) - [GIF to WebM](https://www.converterrr.com/gif-to-webm) (in the browser) - [AVI to MOV](https://www.converterrr.com/avi-to-mov) (in the browser) - [MKV to WebM](https://www.converterrr.com/mkv-to-webm) (in the browser) - [AVI to GIF](https://www.converterrr.com/avi-to-gif) (in the browser) - [AVI to WAV](https://www.converterrr.com/avi-to-wav) (in the browser) - [WMV to WebM](https://www.converterrr.com/wmv-to-webm) (in the browser) ## Convert AVI to other formats [AVI to MP4](https://www.converterrr.com/avi-to-mp4), [AVI to MP3](https://www.converterrr.com/avi-to-mp3), [AVI to WebP](https://www.converterrr.com/avi-to-webp), [AVI to MOV](https://www.converterrr.com/avi-to-mov), [AVI to GIF](https://www.converterrr.com/avi-to-gif), [AVI to WAV](https://www.converterrr.com/avi-to-wav), [AVI to MKV](https://www.converterrr.com/avi-to-mkv), [AVI to M4A](https://www.converterrr.com/avi-to-m4a), [AVI to FLAC](https://www.converterrr.com/avi-to-flac), [AVI to AAC](https://www.converterrr.com/avi-to-aac), [AVI to OGG](https://www.converterrr.com/avi-to-ogg), [AVI to WMV](https://www.converterrr.com/avi-to-wmv), [AVI to Opus](https://www.converterrr.com/avi-to-opus), [AVI to FLV](https://www.converterrr.com/avi-to-flv), [AVI to M4V](https://www.converterrr.com/avi-to-m4v), [AVI to MPEG](https://www.converterrr.com/avi-to-mpeg), [AVI to 3GP](https://www.converterrr.com/avi-to-3gp), [AVI to WMA](https://www.converterrr.com/avi-to-wma), [AVI to MPG](https://www.converterrr.com/avi-to-mpg), [AVI to TS](https://www.converterrr.com/avi-to-ts), [AVI to AIFF](https://www.converterrr.com/avi-to-aiff), [AVI to AMR](https://www.converterrr.com/avi-to-amr), [AVI to VOB](https://www.converterrr.com/avi-to-vob), [AVI to M4B](https://www.converterrr.com/avi-to-m4b) ## Convert other formats to WebM [MP4 to WebM](https://www.converterrr.com/mp4-to-webm), [MOV to WebM](https://www.converterrr.com/mov-to-webm), [GIF to WebM](https://www.converterrr.com/gif-to-webm), [MKV to WebM](https://www.converterrr.com/mkv-to-webm), [WMV to WebM](https://www.converterrr.com/wmv-to-webm), [M4V to WebM](https://www.converterrr.com/m4v-to-webm), [3GP to WebM](https://www.converterrr.com/3gp-to-webm), [FLV to WebM](https://www.converterrr.com/flv-to-webm), [MPEG to WebM](https://www.converterrr.com/mpeg-to-webm), [TS to WebM](https://www.converterrr.com/ts-to-webm), [MPG to WebM](https://www.converterrr.com/mpg-to-webm), [MTS to WebM](https://www.converterrr.com/mts-to-webm), [VOB to WebM](https://www.converterrr.com/vob-to-webm), [M2TS to WebM](https://www.converterrr.com/m2ts-to-webm), [APNG to WebM](https://www.converterrr.com/apng-to-webm), [OGV to WebM](https://www.converterrr.com/ogv-to-webm), [MXF to WebM](https://www.converterrr.com/mxf-to-webm), [DivX to WebM](https://www.converterrr.com/divx-to-webm), [3G2 to WebM](https://www.converterrr.com/3g2-to-webm), [RM to WebM](https://www.converterrr.com/rm-to-webm), [RMVB to WebM](https://www.converterrr.com/rmvb-to-webm), [F4V to WebM](https://www.converterrr.com/f4v-to-webm), [ASF to WebM](https://www.converterrr.com/asf-to-webm) ## AVI to WebM: frequently asked questions ### How do I convert AVI to WebM? Drop your AVI file onto the converter above, make sure WebM is selected, and click Convert. When it's done, download the WebM file — it usually takes a few seconds. ### Is it safe to convert AVI to WebM here? Yes. AVI to WebM conversion happens entirely inside your browser using WebAssembly, so your file is never uploaded to any server. ### Is the AVI to WebM converter free? Yes — free with no watermark. Signed-out visitors can convert 25 files a day, and a free account raises that to 250. ### Will converting AVI to WebM reduce quality? WebM is a lossy format, but our defaults are tuned to be visually indistinguishable for most files. You can raise the quality under Options. ### Can I convert multiple AVI files at once? Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP. ### Can I convert WebM back to AVI? Yes — use our WebM to AVI converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.