MP4 to WebM
Convert MP4 or MOV videos to WebM for the web. Free, no sign-up, no upload: the conversion runs in your browser.
Accepted: MP4, MOV, M4V · Max 1 GB per file
Processed on your device — nothing is uploaded.
How to convert MP4 to WebM
Drop your MP4 files above, or choose them on your device.
Pick the quality and resolution, then click Convert.
Download the files one by one, or all together as a ZIP.
Your files are converted directly in your browser with ffmpeg: they are never uploaded, nothing leaves your device.
Other audio and video converters
- Video converterConvert videos between MP4, MOV, WebM, MKV, AVI and GIF, or extract the sound as MP3.
- Audio converterConvert audio files between MP3, WAV, M4A, OGG and FLAC, or extract the sound of a video.
- MOV to MP4Turn iPhone and QuickTime MOV videos into MP4 that plays everywhere, often without re-encoding.
- WebM to MP4Convert WebM videos to H.264 MP4 for phones, editors and social networks.
- MKV to MP4Convert MKV videos to MP4, without re-encoding when the codecs allow it.
- AVI to MP4Convert old AVI videos to modern H.264 MP4, smaller and playable everywhere.
- MP4 to MOVConvert MP4 videos to MOV for QuickTime, iMovie and Final Cut.
- Video to GIFTurn any video (MP4, MOV, WebM, AVI, MKV) into an animated GIF.
- MP4 to GIFTurn a video clip into an animated GIF, with sharp colors and adjustable size.
- GIF to MP4Convert animated GIFs to MP4: up to 10 times lighter, same animation.
- Video to MP3Extract the sound of any video (MP4, MOV, WebM, AVI, MKV) as MP3.
- MP4 to MP3Extract the sound of an MP4 video as an MP3 file: music, podcast or memo, in seconds.
- MOV to MP3Extract the sound of an iPhone or QuickTime MOV video as an MP3 file.
- WebM to MP3Extract the audio of a WebM video as an MP3 file that plays everywhere.
- WAV to MP3Convert WAV audio to MP3, up to 10 times smaller.
- M4A to MP3Convert M4A and AAC audio (voice memos, iTunes) to MP3.
- FLAC to MP3Convert lossless FLAC music to MP3 for any player.
- OGG to MP3Convert OGG and Opus audio (voice messages) to MP3.
- MP3 to WAVConvert MP3 to uncompressed WAV for editing software.