Is 3440×1440 the same as 43:18?

Yes — divide both sides by 80 (the GCD) to get 43:18. Use aspect-ratio: 43 / 18 and padding-top 41.86% for the legacy fallback.

How do I keep 3440×1440 from stretching?

Set aspect-ratio: 43 / 18 on the container and use object-fit: cover (crop-fill) or contain (letterbox). Never stretch via width/height alone.

What aspect ratio is 3440×1440?

43:18 (~2.3889:1)

3440×1440 simplifies to 43:18 (GCD 80). In decimal that is ~2.3889:1 — a custom 43:18 frame used for ultrawide monitors. The calculator below is preloaded to 43:18 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 43:18 for math.

Ratio W:Ratio H

Width (px)Height (px)

1920 × 804

Exact ratio: 43:18 · CSS: aspect-ratio: 43 / 18 · padding-top fallback: 41.86%

How the ratio was computed

GCD(3440, 1440) = 80

3440 ÷ 80 = 43 → 1440 ÷ 80 = 18

→ 43:18 (dec. 2.3889:1) · padding-top 41.86%

CSS: aspect-ratio: 43 / 18

All math is local and instantly invertible — swap width and height and the ratio stays the same, just rotated. URL sharing works: ?w=3440&h=1440 style deep-links still resolve via the ratio parameters.

Quick 43:18 partner table

Width	Height (43:18)
640px	268px
1280px	536px
1920px	804px
2560px	1072px
3840px	1607px

Other sizes in 43:18

No other catalogued sizes share 43:18 exactly — the table above covers the common computed variants.

Related lookups

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Tip: designing for 3440×1440 uw-qhd? Master at 3440×1440 exactly, then export lighter proxies by halving both sides (e.g. 1720×720) — the ratio stays 43:18 and downscales stay sharp.