Video resolution checker
Check the resolution of a video in your browser — the file never leaves your device.
Drop a video and its size is read from the file: the picture as it is stored, and as it plays once any rotation is applied. The page names the standard it matches — 720p, 1080p, 4K — and the shape of the frame.
720p, 1080p, 4K and the rest
The p number is the height of a landscape picture in lines: 720p is 1280 × 720, 1080p (Full HD) is 1920 × 1080, 1440p is 2560 × 1440 and 4K UHD is 3840 × 2160. A portrait phone video of 1080 × 1920 is still 1080p, because the standard is the shorter side, and a size a few lines off, like 1920 × 1088, still counts.
Why a vertical video can show as 1920 × 1080
Phones save a video held upright as a landscape picture with a note to turn it a quarter turn when it plays. Some programs read only the stored size and report 1920 × 1080; this page reads the note as well and gives the size you see, 1080 × 1920, with the stored size beside it.
Aspect ratio
The shape of the frame: 16:9 for nearly all video today, 9:16 for vertical video, 4:3 for older television and many screen recordings, 1:1 for square posts. Cinema shapes such as 2.39:1 are named too; anything else is shown as a ratio.
How to use it
- Add a video file.
- Read the resolution as it plays and the standard it matches.
- Check the aspect ratio and which way up it is.
Why use this tool
Completely private
Everything runs inside your browser. Your files and text are never sent to a server.
Free, with no limits
No sign-up, no watermarks and no cap on how many times you can use it.
Instant results
There is no upload or queue to wait for, so results appear as fast as your device can work.
Works on any device
Runs in any modern browser on phone, tablet or desktop. Nothing to install.
Frequently asked questions
- How do I check the resolution of a video?
- Drop it here: the width and height as it plays, the standard it matches and its aspect ratio appear at once. On Windows, Properties › Details shows a frame width and height, which for a phone video may be the stored size rather than the way it plays.
- Is 1920 × 1080 the same as 1080p?
- Yes. 1080p means 1080 lines from top to bottom of a landscape picture, and at 16:9 that is 1920 wide. The p stands for progressive — whole frames, not alternating lines — while 1080i is the interlaced version some television broadcasts use.
- Why does my phone video show as 1920 × 1080 when it is vertical?
- Because that is how it is stored: phones record a landscape picture and mark it to be turned when it plays. This page reads the mark and shows 1080 × 1920, with the stored size and the rotation beside it.
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