What is 21:9 in pixels at 1080p?
1920 × 822 px
A 21:9 frame delivered at 1080p is 1920 × 822 pixels, 2.33 times as wide as it is tall. Ultrawide monitors and some game capture.
How that is worked out
height = width ÷ (ratio width ÷ ratio height)
1920 ÷ 2.3333 = 822.86, rounded to 822
Worth knowing
- The exact height is 822.86 px. Encoders need even numbers, so delivery rounds to 822 px — 0.104% away from a true 2.33:1.
- That is 1.58 MP per frame, 76% of the 2.07 MP a full 1080p 1920 × 1080 frame carries.
- Dropped into a 1920 × 1080 timeline it fits at 1920 × 822, leaving bars of 129 px top and bottom.
- Where you see it: Ultrawide monitors and some game capture.
21:9 at every delivery size
| Delivery | Pixels | Per frame |
|---|---|---|
| 480p | 854 × 366 | 0.31 MP |
| 720p | 1280 × 548 | 0.70 MP |
| 1080p — this page | 1920 × 822 | 1.58 MP |
| 1440p | 2560 × 1098 | 2.81 MP |
| 4K | 3840 × 1646 | 6.32 MP |
Every value is rounded to an even number of pixels: H.264 and H.265 subsample colour in 2 × 2 blocks and reject odd dimensions.
Ratios either side of 21:9 at 1080p
| Ratio | Pixels | Decimal | Bars inside 1920 × 1080 |
|---|---|---|---|
| 3:2 | 1620 × 1080 | 1.50:1 | 150 px left and right |
| 16:9 | 1920 × 1080 | 1.78:1 | none — exact fit |
| 1.85:1 | 1920 × 1038 | 1.85:1 | 21 px top and bottom |
| 1.9:1 | 1920 × 1010 | 1.90:1 | 35 px top and bottom |
| 2:1 | 1920 × 960 | 2.00:1 | 60 px top and bottom |
| 21:9 — this page | 1920 × 822 | 2.33:1 | 129 px top and bottom |
| 2.39:1 | 1920 × 804 | 2.39:1 | 138 px top and bottom |
Need it for other values?
Scale width and height to 16:9, 9:16, 4:5, 2.39:1 or a custom ratio, with pixel dimensions at 1080p and 4K.