List resolutions by aspect ratio
Pick a ratio to see every resolution that fits it. Real ultrawide monitor resolutions (21:9, 32:9) are included with their actual ratios.
Resolutions by aspect ratio
Choose a ratio
Decimals such as 2.39 : 1 are allowed.
| Resolution | Actual ratio | W ÷ H | Name | Copy |
|---|
No resolutions match. Try changing the width range or the filters.
Calculators
Enter a ratio and a width (or height) to get the other side. The ratio follows the one selected in the list above.
Enter a width and height to get the reduced ratio and the closest standard ratio.
What is an aspect ratio?
An aspect ratio is the width-to-height proportion of a screen or video. For example, dividing both sides of 1920x1080 by 120 gives 16:9. One ratio has many resolutions: 1280x720, 1920x1080 and 3840x2160 are all 16:9.
In games, choosing a resolution with the same ratio as your monitor avoids a stretched picture and black bars on the sides or at the top and bottom.
FAQ
Why isn’t my 21:9 monitor’s resolution exactly 21:9?
“21:9” is a marketing name, and the actual resolutions differ slightly. 2560x1080 reduces to 64:27 (W÷H 2.370) and 3440x1440 to 43:18 (2.389), both a little wider than exact 21:9 (7:3, 2.333).
When setting a game resolution, pick your monitor’s own resolution rather than a calculated exact 21:9 value. In the list, real monitor resolutions are marked “Monitor” and shown with their actual ratio.
What is “Multiples of 8 only” for?
Video encoders split the picture into blocks such as 8x8 or 16x16. When the width and height are multiples of 8, the blocks fit without leftovers, so the resolution is easier to handle.
Use it when you want clean resolutions for streaming or video export.
Why do video exports need an even width and height?
The common color format YUV 4:2:0 stores color once for each 2x2 block of pixels, so some software and encoders can’t export an odd width or height.
Turn on “Round to even” in “Calculate the other side” to round the result to an even number.
Can I use a ratio that has no button?
Choose “Custom” to enter any ratio, including decimals such as the 2.39:1 used in films.