16:9 Aspect Ratio Calculator + Bulk Resizer
Work out any 16:9 dimension, then resize or crop a whole folder of images to match — free, in your browser.
Work out any 16:9 dimension, then resize or crop a whole folder of images to match — free, in your browser.
The 16:9 aspect ratio is the international standard for HDTV, widescreen television, and most computer monitors. It replaced the older 4:3 format and provides a wider field of view that better matches human peripheral vision. This ratio means for every 16 units of width, there are 9 units of height.
A 16:9 frame is always width divided by 1.7778. If you know the width you know the height, and every row in the table below is just that sum done for you. 1920 wide gives 1080 tall; 2560 gives 1440; 3840 gives 2160. Anything that does not divide cleanly — 1366x768 and 854x480 are the two you will hit most — is not actually 16:9, it is close enough that nobody complained.
Standard format for YouTube videos, Twitch streams, and most online video platforms
Modern HDTV standard, used by Netflix, broadcast TV, and digital cinema
Standard resolution for PC gaming monitors, consoles, and esports
Default widescreen format for PowerPoint and Google Slides
Yes, 1920x1080 (also known as 1080p or Full HD) is exactly 16:9. When you divide 1920 by 16 and 1080 by 9, you get the same value (120), confirming this is a perfect 16:9 ratio.
You have three options: 1) Crop the top and bottom (loses content), 2) Add black bars on the sides (letterboxing/pillarboxing), or 3) Stretch the image (causes distortion). Cropping is usually preferred when the important content is centered.
16:10 is slightly taller than 16:9. While 16:9 is standard for video content, 16:10 was popular for computer monitors because the extra vertical space is useful for productivity applications like coding and document editing.
16:9 was chosen as a mathematical compromise that could display both 4:3 (classic TV) and various widescreen cinema formats with minimal letterboxing or cropping. It was officially adopted as the HDTV standard in the 1990s.
YouTube recommends 1920x1080 (1080p) as the minimum for HD quality. For best results, upload at 2560x1440 (1440p) or 3840x2160 (4K) to ensure viewers with high-resolution displays get the best experience.
There is no single answer, because 16:9 is a shape rather than a size — but the five you will actually be asked for are 1280x720, 1920x1080, 2560x1440, 3840x2160 and 7680x4320. Any pair where the width divides by 16 and the height divides by 9 to the same number is a valid 16:9 ratio in pixels.
No, and it is the most common false positive there is. 1366 divided by 16 is 85.375; 768 divided by 9 is 85.33. True 16:9 at that height would be 1365.33 wide, which is not a whole pixel, so laptop panels rounded up and the industry quietly lived with it. Close enough to look right, wrong enough to leave a hairline bar if you letterbox against it.