Calculate dimensions
Type a width or height — the other fills in automatically at a 21:9 ratio.
Common 21:9 sizes
| Size | Name |
|---|---|
| 3440 × 1440 | Ultrawide QHD |
Other ratios
Use it in code
Click to copy.
.element {
aspect-ratio: 21 / 9;
}
Decimal ratio 2.3333:1. Commonly used for Cinematic ultrawide monitors and gaming displays.
Type a width or height — the other fills in automatically at a 21:9 ratio.
| Size | Name |
|---|---|
| 3440 × 1440 | Ultrawide QHD |
Click to copy.
.element {
aspect-ratio: 21 / 9;
}