Convert video to MP4

Turns WEBM, MOV, MKV, AVI and other formats into an MP4 with H.264 video and AAC audio — the combination that plays on essentially every phone, TV, browser and editor.

This tool runs entirely in your browser — nothing you type or open here is ever uploaded. You can disconnect from the internet after the page loads and it still works.

Drop files here or click to choose

One video file — WEBM, MOV, MKV, AVI, FLV, WMV

up to 400 MB

Video work happens on your own processor, so it is slower here than in a native app — expect roughly real time, and the engine downloads once per visit (about 31 MB). Nothing is uploaded, which is the trade.

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Making a clip for TikTok, Reels or Shorts?

PostCut is the desktop app for exactly that: step frame by frame, cut precisely, crop to the platform's shape with safe-zone guides, blur what shouldn't be seen, and export at the exact delivery size — or fit under Discord's 10 MB cap. All on your machine, nothing uploaded. See what PostCut does →

Get it from the Microsoft Store

Convert video to MP4

Drop files here or click to choose

Making a clip for TikTok, Reels or Shorts?

More video & audio tools

🎚️ Audio converter

🎬 Compress video

✂️ Trim video

🎵 Video to MP3

🎞️ Video to GIF

🔇 Mute video