21:9 Aspect Ratio (Ultrawide)
21:9 is the ultrawide ratio — much wider than standard widescreen. It approximates the cinematic look on consumer hardware.
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Aspect ratio
43:18
Decimal
2.3889
Nearest standard
2.39:1
exact
One-tap size presets
Social media
Video & display
Photo & print
Common 21:9 resolutions
| Resolution | Name |
|---|---|
| 3440 × 1440 | UWQHD |
| 2560 × 1080 | UW-FHD |
Where 21:9 is used
Ultrawide gaming and productivity monitors, cinematic video, and immersive multi-window workflows.
Frequently asked questions
What is the 21:9 aspect ratio? +
21:9 is the ultrawide ratio — much wider than standard widescreen. It approximates the cinematic look on consumer hardware. Common resolutions include 3440 × 1440, 2560 × 1080.
What resolutions are 21:9? +
Popular 21:9 resolutions are 3440 × 1440 (UWQHD), 2560 × 1080 (UW-FHD).
Where is the 21:9 aspect ratio used? +
Ultrawide gaming and productivity monitors, cinematic video, and immersive multi-window workflows.