Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
Convert your AVI video files into the WMV container format with our fast online tool. This conversion is ideal for users needing better compatibility with Windows-based multimedia environments.
AVI (Audio Video Interleave) is a legacy container developed by Microsoft that often holds uncompressed or heavily compressed video data. WMV (Windows Media Video) is a more modern container designed specifically for streaming and playback within the Windows ecosystem. During conversion, our tool re-encodes the video stream into the WMV structure while maintaining the original metadata structure as closely as possible.
Since both AVI and WMV are lossy formats, re-encoding causes a generational loss of quality. We recommend using the highest possible bitrate settings to minimize visual artifacts during the conversion process.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
