What width is 1600 tall at 16:9?

1600 x 16 / 9 = 2844px. Use aspect-ratio: 16 / 9.

How to keep 1600 tall from stretching?

Set height: 1600px paired with the computed width, and aspect-ratio: W / H on the container; use object-fit for inner media.

1600 at this size works vertical or horizontal depending on ratio - check the table for portrait inversions like 9:16.

A 1600px-tall frame is used in many layouts. The table below lists the exact partner width at every ratio RatioCalc supports.

Ratio	Width for 1600	Pair	CSS
16:9	2844px	2844x1600	aspect-ratio: 16 / 9
4:3	2133px	2133x1600	aspect-ratio: 4 / 3
1:1	1600px	1600x1600	aspect-ratio: 1 / 1
9:16	900px	900x1600	aspect-ratio: 9 / 16
21:9	3733px	3733x1600	aspect-ratio: 21 / 9
3:2	2400px	2400x1600	aspect-ratio: 3 / 2
16:10	2560px	2560x1600	aspect-ratio: 16 / 10
4:5	1280px	1280x1600	aspect-ratio: 4 / 5
2:1	3200px	3200x1600	aspect-ratio: 2 / 1
239:100	3824px	3824x1600	aspect-ratio: 239 / 100
32:9	5689px	5689x1600	aspect-ratio: 32 / 9
5:4	2000px	2000x1600	aspect-ratio: 5 / 4
2:3	1067px	1067x1600	aspect-ratio: 2 / 3
18:9	3200px	3200x1600	aspect-ratio: 18 / 9
5:3	2667px	2667x1600	aspect-ratio: 5 / 3
1:2	800px	800x1600	aspect-ratio: 1 / 2

width = 1600 x rw / rh

// e.g. 9:16 at 1600 tall is 900px

Print tip: at 1600px, verify with w = 1600 x rw / rh before print - 1px matters on narrow banners.