Heights for 3840 wide
A 3840px-wide frame is common. Pick the ratio you need - the paired height is already computed below for every ratio RatioCalc supports.
All heights for 3840 wide
| Ratio | Height for 3840 | Pair | CSS |
|---|---|---|---|
| 16:9 | 2160px | 3840x2160 | aspect-ratio: 16 / 9 |
| 4:3 | 2880px | 3840x2880 | aspect-ratio: 4 / 3 |
| 1:1 | 3840px | 3840x3840 | aspect-ratio: 1 / 1 |
| 9:16 | 6827px | 3840x6827 | aspect-ratio: 9 / 16 |
| 21:9 | 1646px | 3840x1646 | aspect-ratio: 21 / 9 |
| 3:2 | 2560px | 3840x2560 | aspect-ratio: 3 / 2 |
| 16:10 | 2400px | 3840x2400 | aspect-ratio: 16 / 10 |
| 4:5 | 4800px | 3840x4800 | aspect-ratio: 4 / 5 |
| 2:1 | 1920px | 3840x1920 | aspect-ratio: 2 / 1 |
| 239:100 | 1607px | 3840x1607 | aspect-ratio: 239 / 100 |
| 32:9 | 1080px | 3840x1080 | aspect-ratio: 32 / 9 |
| 5:4 | 3072px | 3840x3072 | aspect-ratio: 5 / 4 |
| 2:3 | 5760px | 3840x5760 | aspect-ratio: 2 / 3 |
| 18:9 | 1920px | 3840x1920 | aspect-ratio: 18 / 9 |
| 5:3 | 2304px | 3840x2304 | aspect-ratio: 5 / 3 |
| 1:2 | 7680px | 3840x7680 | aspect-ratio: 1 / 2 |
Formula - same for every ratio
height = 3840 x rh / rw
// e.g. 16:9 - 3840x9/16 = 2160px - padding-top 56.25%
modern: .frame { aspect-ratio: rw / rh; width: 3840px }
Known exact 3840-wide resolutions
- 3840x2160 - 3840×2160 4K UHD - 4K masters, high-res display
- 3840x1080 - 3840×1080 Dual FHD - Dual 1080p side-by-side
- 3840x1600 - 3840×1600 UW 4K - 21:9 ultrawide 4K
How to use this page
- Find your ratio (16:9 for YouTube, 1:1 for square avatars, 9:16 for Stories, 4:5 for portrait feed).
- Read the height next to it - e.g. 3840 at 4:5 is 4800 portrait, 3840 at 32:9 is 1080 super-ultrawide.
- Export at 3840x(paired height) exactly - or halve both sides for a lighter proxy with the same ratio.
Other widths
Match with height hubs
Tip: mastering at 3840? The table rounds to the nearest pixel; verify with height = 3840 x rh / rw for print-critical work.