21:9 Aspect Ratio
Ultrawide cinematic scope — the immersive, letterboxed look of anamorphic cinema. Perfect for cinematic stills, ultrawide monitors and hero banners.
21:9 dimensions and resolutions
| Property | Value |
|---|---|
| Ratio | 21:9 |
| Decimal | 2.33 |
| Orientation | ultrawide |
| Common resolutions | 2560×1080, 3440×1440, 5120×2160 |
What is the 21:9 aspect ratio used for?
Ultrawide cinematic scope — the immersive, letterboxed look of anamorphic cinema. Perfect for cinematic stills, ultrawide monitors and hero banners.
Best for: cinematic stills, ultrawide wallpapers, hero banners, film stills, gaming
Common platforms: Ultrawide monitors, Cinematic content, Hero banners
Prompting tips for 21:9
21:9 is extremely wide, so use the horizontal space for environmental storytelling — a subject on one third, landscape stretching into the distance on the other.
Generating 21:9 images with kublaro
When the selected Kublaro model exposes 21:9, choose it before generation so the composition is requested for that frame. Supported ratios, delivered pixel dimensions, and resizing behavior can vary by model. Verify the exported width and height; an exact source ratio does not prevent a downstream platform, template, or print lab from cropping it.
- Create your kublaro account and open the create studio.
- Choose a model that currently exposes 21:9, then set that ratio in its generation settings.
- Write your prompt with the ultrawide composition in mind.
- Generate, refine, export, and verify the delivered pixel dimensions before publishing.
FAQ
What is 21:9 used for?+
21:9 is used for ultrawide monitors, cinematic film stills, hero banners, and immersive wallpapers. It is the widest common display ratio.
What resolution is 21:9?+
Common 21:9 resolutions include 2560×1080, 3440×1440, and 5120×2160.
Is 21:9 the same as cinematic?+
21:9 approximates the 2.35:1 and 2.39:1 anamorphic cinema scopes. It is the ratio of choice for a cinematic, letterboxed look.
Generate images in 21:9 with kublaro
Check current model support, request 21:9, and verify the exported dimensions before delivery.