Is 1284×2778 the same as 214:463?

Yes — divide both sides by 6 (the GCD) to get 214:463. Use aspect-ratio: 214 / 463 and padding-top 216.36% for the legacy fallback.

How do I keep 1284×2778 from stretching?

Set aspect-ratio: 214 / 463 on the container and use object-fit: cover (crop-fill) or contain (letterbox). Never stretch via width/height alone.

What aspect ratio is 1284×2778?

214:463 (~0.4622:1)

1284×2778 simplifies to 214:463 (GCD 6). In decimal that is ~0.4622:1 — a custom 214:463 frame used for pro max portrait. The calculator below is preloaded to 214:463 so you can solve any partner dimension at the same ratio.

No named calculator page covers this exact ratio, but the solver below handles any ratio — treat it as 214:463 for math.

Ratio W:Ratio H

Width (px)Height (px)

1920 × 4154

Exact ratio: 214:463 · CSS: aspect-ratio: 214 / 463 · padding-top fallback: 216.36%

How the ratio was computed

GCD(1284, 2778) = 6

1284 ÷ 6 = 214 → 2778 ÷ 6 = 463

→ 214:463 (dec. 0.4622:1) · padding-top 216.36%

CSS: aspect-ratio: 214 / 463

All math is local and instantly invertible — swap width and height and the ratio stays the same, just rotated. URL sharing works: ?w=1284&h=2778 style deep-links still resolve via the ratio parameters.

Quick 214:463 partner table

Width	Height (214:463)
640px	1385px
1280px	2769px
1920px	4154px
2560px	5539px
3840px	8308px

Other sizes in 214:463

No other catalogued sizes share 214:463 exactly — the table above covers the common computed variants.

Related lookups

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Tip: designing for 1284×2778 iphone 12 pro max? Master at 1284×2778 exactly, then export lighter proxies by halving both sides (e.g. 642×1389) — the ratio stays 214:463 and downscales stay sharp.