Convert MP4 (the most widely used video format, compatible with all devices) to WebM (an open format optimized for web and streaming) completely free. Upload your file, choose quality, and download the result in seconds.
Drag and drop a video file here
or
3GP · AVI · FLV · M4V · MKV · MOV · MP4 · MPEG · MPG · MTS · OGV · TS · WEBM · WMV · Maks 2 GB
Choose or drag your video file into the conversion window.
Choose your desired output format and adjust the quality level as needed.
FFmpeg processes the file on the server. Download the converted video.
Input: 3GP, AVI, FLV, M4V, MKV, MOV, MP4, MPEG, MPG, MTS, OGV, TS, WEBM, WMV. Output: MP4, AVI, MOV, MKV, WEBM, FLV, WMV, GIF, MP3, AAC.
High quality — best image quality, largest file size. Balanced — standard for de fleste brukstilfor. Small file size — raskere konvertering, mindre fil, lavere kvalitet.
Yes! Choose MP3 or AAC as the output format to extract the audio track from a video.
Yes, choose GIF as the output format. Recommended for short clips (under 30 seconds) to keep the file size down.
All files are deleted automatically after 1 hour. We never read or share your content.
A video converter is a tool that changes a video file's format without losing its content. Konvertio uses FFmpeg — the industry standard for video processing — to convert between all popular formats like MP4, AVI, MOV, MKV, WebM, and more, directly in your browser.
Need to convert other file types? Try our other free converters: Audio Converter (MP3, WAV, FLAC) · Image Converter (JPG, PNG, WebP) · Document Converter (PDF, Word)