How Big Is a 43 Inch Monitor?
A 43-inch 16:9 monitor measures about 37.5 inches wide and 21.1 inches tall. Like the 42-inch, this is large-format territory. Some manufacturers specifically target 43 inches for "4-in-1" displays — the idea being that a 43-inch 4K monitor can replace four tiled 1080p 21-inch monitors. This appeals to developers, traders, and anyone who currently uses multiple small monitors.
43-Inch Monitor Dimensions by Aspect Ratio
Exact width and height calculated from the 43-inch diagonal at each common aspect ratio.
| Aspect Ratio | Width | Height |
|---|---|---|
| 16:9 | 37.48" (95.19 cm) | 21.08" (53.55 cm) |
| 16:10 | 36.46" (92.62 cm) | 22.79" (57.89 cm) |
| 21:9 | 39.52" (100.39 cm) | 16.94" (43.02 cm) |
| 4:3 | 34.4" (87.38 cm) | 25.8" (65.53 cm) |
Resolution and Pixel Density at 43 Inches
| Resolution | Pixel Density |
|---|---|
| 1080p (Full HD) | 51.2 PPI |
| 1440p (QHD) | 68.3 PPI |
| 4K (UHD) | 102.5 PPI |
Ideal resolution: 4K (UHD)
At 43 inches, 4K delivers 102 PPI — just enough for comfortable text without scaling, though it's at the lower end of comfortable. Some people run these at 125% scaling and still get more usable space than a 27-inch 1440p.
Who Should Buy a 43-Inch Monitor?
Developers: Run four terminal/editor windows tiled in a 2x2 grid, each equivalent to a 21-inch 1080p monitor. Eliminates bezels between panels and simplifies cable management.
Day traders: Charts, order books, and news feeds across one large panel. No bezels interrupting your data streams.
Dashboard monitoring: IT operations, social media dashboards, analytics — any workflow that benefits from lots of information visible at once.
Viewing Distance
Recommended: 34-50 inches (86-125 cm)
Similar requirements to a 42-inch. You need significant desk depth or a push-back mounting solution to use this comfortably at a desk.
Desk Space Requirements
Needs about 38 inches of desk width and ideally 32+ inches of depth. Some people mount these on the wall behind their desk.
How 43 Inches Compares to Other Sizes
vs. smaller monitors: If you're currently using two 24-inch monitors (about 42 inches combined width), a single 43-inch display is roughly the same width with a unified, bezel-free canvas.
vs. larger monitors: A 48-inch or 49-inch is the next step, but at that point you might prefer an ultrawide format. 43 inches is near the practical limit for 16:9 desktop use.
Buying Advice
Look for monitors specifically designed for desktop use, not repurposed TV panels. Desktop-targeted 43-inch monitors have features like KVM switches, USB-C hubs, and picture-by-picture mode for connecting multiple computers. Check input lag specs if gaming is a priority.
Compare 43-Inch Monitors
See how a 43-inch monitor looks next to other sizes on a virtual desk.