What aspect ratio is 640×480?
4:3 (~1.3333:1)
640×480 simplifies to 4:3 (GCD 160). In decimal that is ~1.3333:1 — a standard 4:3 frame used for vga, 4:3 retro. The calculator below is preloaded to 4:3 so you can solve any partner dimension at the same ratio.
→ Open the full 4:3 Aspect Ratio Calculator →
:
1920 × 1440
Exact ratio: 4:3 · CSS: aspect-ratio: 4 / 3 · padding-top fallback: 75.00%
How the ratio was computed
GCD(640, 480) = 160
640 ÷ 160 = 4 → 480 ÷ 160 = 3
→ 4:3 (dec. 1.3333:1) · padding-top 75.00%
CSS: aspect-ratio: 4 / 3
All math is local and instantly invertible — swap width and height and the ratio stays the same, just rotated. URL sharing works: ?w=640&h=480 style deep-links still resolve via the ratio parameters.
Quick 4:3 partner table
| Width | Height (4:3) |
|---|---|
| 640px | 480px |
| 1280px | 960px |
| 1920px | 1440px |
| 2560px | 1920px |
| 3840px | 2880px |
Other sizes in 4:3
- 1024×768 — 1024×768 XGA — Classic 4:3, old iPad
- 800×600 — 800×600 SVGA — Retro 4:3
- 1920×1440 — 1920×1440 QXGA — 4:3 QXGA, high-res 4:3
Related lookups
- 1920×1080 — 1920×1080 Full HD
- 1280×720 — 1280×720 HD
- 3840×2160 — 3840×2160 4K UHD
- 2560×1440 — 2560×1440 QHD
- 1366×768 — 1366×768 WXGA
- 3440×1440 — 3440×1440 UW-QHD
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Tip: designing for 640×480 vga? Master at 640×480 exactly, then export lighter proxies by halving both sides (e.g. 320×240) — the ratio stays 4:3 and downscales stay sharp.