YouTube video size checker

1. 1

   Add a video

   Drop the file you plan to upload. It's read in your browser, not uploaded.

2. 2

   Read the checks

   Each line shows what the file has; anything that needs a look gets one short note.

3. 3

   Fix before uploading

   Re-export with the settings the notes point to, then check again.

On a computer YouTube's player is 16:9, and YouTube lists these 16:9 sizes: 3840 × 2160 (2160p, 4K), 2560 × 1440 (1440p), 1920 × 1080 (1080p), 1280 × 720 (720p), then 854 × 480, 640 × 360 and 426 × 240. 7680 × 4320 (8K) is listed too.

A video in another shape still plays: the player adjusts to it, and YouTube asks you not to add black bars yourself. A square or vertical video of up to 3 minutes uploads as a Short.

YouTube recommends MP4 with the index at the front, H.264 video, and AAC-LC or Opus audio, at the frame rate you recorded. Common rates are 24, 25, 30, 48, 50 and 60 fps, and others are accepted.

• 2160p: 35–45 Mbps at up to 30 fps, 53–68 Mbps at 48–60 fps.
• 1440p: 16 Mbps, or 24 Mbps at 48–60 fps.
• 1080p: 8 Mbps, or 12 Mbps at 48–60 fps.
• 720p: 5 Mbps, or 7.5 Mbps at 48–60 fps.

16:9, such as 1920 × 1080 (1080p) or 3840 × 2160 (4K). For a Short, square or vertical such as 1080 × 1920, up to 3 minutes.

16:9 fills the player on a computer. Other ratios still play; the player adjusts to them, so don't add black bars.

It's under what YouTube recommends for that resolution and frame rate. Export again at the bitrate in the note, or higher.

If it's square or vertical and 3 minutes or shorter, yes. Longer vertical videos upload as regular videos.

No. Your browser reads the file's details itself. Nothing is sent anywhere.