40" vs 43" TV — 16% Size Difference Visualized

Is the jump from 40" to 43" worth it? See both TVs overlaid at real-world scale. The 43" is 16% larger (37.5" × 21.1" vs 34.9" × 19.6"). Free visual tool.

40" 16:9 measures 34.9" wide × 19.6" tall (684 sq in of screen area). 43" 16:9 measures 37.5" wide × 21.1" tall (791.3 sq in). The 43" 16:9 has 16% more screen area than the 40" 16:9.

For a 43" 4K TV, the recommended viewing distance is 4.3–6.5 feet. At that distance the screen fills roughly 54° of your horizontal field of view — well above the 30° SMPTE cinema standard for an immersive experience. A 43" TV is a versatile size suitable for both bedrooms and smaller living rooms.

Quick Comparison Facts

16%

More screen area

34.9" × 19.6"

40" 16:9 (W×H)

37.5" × 21.1"

43" 16:9 (W×H)

4.3–6.5 ft

Viewing distance (43")

Display 1

Aspect ratio

Size

Orientation

Display 2

Aspect ratio

Size

Orientation

Size Comparison

Display 1: 40in 16x9 (horizontal)

Display 2: 43in 16x9 (horizontal)

Comparison Details

Display 1

40in diagonal

34.9" × 19.6" (W×H)

684 sq in area

16:9 · ~110 PPI (4K)

Difference

16%

area difference

diagonal difference

Display 2

43in diagonal

37.5" × 21.1" (W×H)

791.3 sq in area

16:9 · ~102 PPI (4K)

Check exact PPI & sharpness for your desk depth →

Which Size Should You Choose?

Choose the 40" if:

Your viewing distance is under 5 feet
The TV is for a bedroom or smaller room
You have limited wall or entertainment center space
Budget is a primary consideration

Choose the 43" if:

Your viewing distance is 4+ feet
You want maximum immersion for movies and sports
It's for a main living room or home theater
You prefer a cinematic viewing experience

40" 16:9 vs 43" 16:9: Detailed Specifications

Specification	40" 16:9	43" 16:9
Screen diagonal	40"	43"
Width	34.9"	37.5"
Height	19.6"	21.1"
Screen area	684 sq in	791.3 sq in
1080p pixel density	55 PPI	51 PPI
4K pixel density	110 PPI	102 PPI
Recommended viewing distance	4–6 ft	4.3–6.5 ft

The 43" 16:9 has 16% more screen area than the 40" 16:9. In practice, this means the 43" 16:9 (37.5" wide) extends 2.6" further across and 1.5" taller than the 40" 16:9.

For TV viewing, the size jump from 40" to 43" is most noticeable at your sofa or seating distance. The 43" model requires a minimum viewing distance of 4.3 feet for a comfortable experience — if your couch is closer than that, the 40" may actually provide a better image at that distance, especially for 1080p content. At distances over 4.3 feet, the larger screen fills more of your field of view, adding meaningful immersion for films and sports.

Use the interactive tool above to visualize exactly how these sizes compare on your screen. You can also adjust the aspect ratio and orientation to match your specific device.

Frequently Asked Questions

How much bigger is a 43" 16:9 display than a 40" 16:9?

A 43" 16:9 display has 16% more screen area than a 40" 16:9. The 40" 16:9 measures 34.9" × 19.6" (684 sq in) while the 43" 16:9 measures 37.5" × 21.1" (791.3 sq in).

What are the exact dimensions of a 43" 16:9 display?

A 43" 16:9 display measures 37.5 inches wide by 21.1 inches tall, giving a total viewing area of 791.3 square inches.

What is the best viewing distance for a 43-inch TV?

For a 43-inch 4K TV, the recommended viewing distance is 4.3 to 6.5 feet. For 1080p content, sit slightly further back at 7 to 9 feet for best image quality.