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RatioCalc

What aspect ratio is 4000×6000?

2:3 (~0.6667:1)

4000×6000 simplifies to 2:3 (GCD 2000). In decimal that is ~0.6667:1 — a standard 2:3 frame used for vertical 2:3 print master. The calculator below is preloaded to 2:3 so you can solve any partner dimension at the same ratio.

→ Open the full 2:3 Portrait Photo Calculator →

:

1920 × 2880

Exact ratio: 2:3 · CSS: aspect-ratio: 2 / 3 · padding-top fallback: 150.00%

How the ratio was computed

GCD(4000, 6000) = 2000

4000 ÷ 2000 = 2 → 6000 ÷ 2000 = 3

→ 2:3 (dec. 0.6667:1) · padding-top 150.00%

CSS: aspect-ratio: 2 / 3

All math is local and instantly invertible — swap width and height and the ratio stays the same, just rotated. URL sharing works: ?w=4000&h=6000 style deep-links still resolve via the ratio parameters.

Quick 2:3 partner table

WidthHeight (2:3)
640px960px
1280px1920px
1920px2880px
2560px3840px
3840px5760px

Other sizes in 2:3

No other catalogued sizes share 2:3 exactly — the table above covers the common computed variants.

Related lookups

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Tip: designing for 4000×6000 24mp portrait? Master at 4000×6000 exactly, then export lighter proxies by halving both sides (e.g. 2000×3000) — the ratio stays 2:3 and downscales stay sharp.