How to use the Video converter
- Choose a video from your computer or phone, or drop it on the box.
- Pick the format you need in "Convert to". MP4 is the safest choice if you are not sure.
- Adjust resolution and quality if you want a smaller file. "Same as original" is fastest.
- Click Convert and download the new file.
Which format should I choose?
- MP4: plays on every phone, computer, TV and website. The best default.
- MOV: for Final Cut Pro, iMovie and QuickTime workflows.
- MKV: for media servers like Plex and Kodi.
- WEBM: for web pages and HTML5 players.
- AVI or XviD: for older DVD players and TVs with USB ports.
- MP3 or WAV: when you only need the sound.
Fast mode: converting without losing quality
When the video inside your file is already H.264 and the new format can hold it, the converter copies the video and audio streams instead of re-encoding them. That takes seconds even for a full film and keeps the quality exactly the same. You will see "Fast mode" under the button when this happens.
If the codec has to change, for example WEBM to MP4 or HEVC to H.264, the video is re-encoded. That uses your device's processor and can take a few minutes for a long HD video.
Private by design
Most online converters upload your video to their servers. This one does not. The conversion engine (FFmpeg compiled to WebAssembly) downloads once to your browser and processes the file on your own device, so personal videos never leave it.
Good to know
Video is encoded with H.264 (x264) and AAC unless the format needs something else, and audio uses each format's standard encoder (LAME for MP3, native AAC, Vorbis, Opus, FLAC). When the codecs already match, streams are copied instead of re-encoded.
Supported files
MP4, MOV, MKV, WEBM, AVI, WMV, FLV, M4V, 3GP, 3G2, MPEG, MPG, TS, MTS, M2TS, VOB, OGV, MXF, ASF, DIVX, F4V, SWF, DV, MOD, TOD, WTV, RM and RMVB video, with H.264, HEVC, VP8, VP9, MPEG-4, MPEG-2, WMV, Theora and other codecs. AV1 videos cannot be read in the browser yet. Files up to 1 GB each.
Frequently asked questions
What is the largest video I can convert?
Up to 1 GB per file. Browsers limit how much memory a web page can use, so very large or long 4K files may fail on phones. A desktop browser handles big files best.
Why is my conversion slow?
Re-encoding video is heavy work. A 10-minute 1080p video can take several minutes in a browser. Choosing 720p, or a format that allows fast mode, makes it much quicker.
Can I convert several videos at once?
One file at a time on this page. When it finishes, click "Start over with a new file" for the next one.
Do I have to pay or sign up to use the Video Converter?
No. There is no account, no payment and no watermark. The only limit is 1 GB per file, set by what browsers can handle.
Are my files safe?
Yes. Files are converted locally in your browser and are never uploaded. When you close the page, nothing is left behind.
Does it work on iPhone and Android?
Yes, in Safari, Chrome and other modern mobile browsers. Short files work best on phones; for long or high-resolution videos a computer is faster.