A 43-inch TV is named for the screen's diagonal measurement, from one opposite screen corner to the other. An ideal 16:9 screen with an exact 43-inch diagonal is about 37.48 inches wide and 21.08 inches high (about 95.19 × 53.54 cm).
These are screen-only calculations. The complete television is larger because of its frame and cabinet, and a “43-inch class” TV may have a measured screen diagonal slightly below 43 inches.
| Screen measurement | Approximate size for an exact 43-inch 16:9 screen |
|---|---|
| Diagonal | 43 in (3 ft 7 in; 109.22 cm) |
| Width | 37.48 in (3.12 ft; 95.19 cm) |
| Height | 21.08 in (1.76 ft; 53.54 cm) |
The calculation uses the 16:9 screen ratio. Width = diagonal × 16 ÷ √(16² + 9²); height = diagonal × 9 ÷ √(16² + 9²). Centimeter conversions use 2.54 cm per inch. Values are rounded.
For one specific U.S. example, Sony lists the 2025 K-43S20M2 as a 43-inch-class set with a measured screen diagonal of 42.5 inches.
| Configuration | Width × height × depth | Weight |
|---|---|---|
| TV without stand | 37.75 × 22.5 × 3.13 in | 17.2 lb |
| TV with stand | 37.75 × 24.75 × 10.13 in | 17.7 lb |
| Shipping carton | 40.88 × 26.25 × 5.88 in | 24.3 lb gross |
These measurements belong to this model only. Check the exact TV's manufacturer specifications before planning a wall mount, cabinet, shelf, or delivery route.
A 43-inch label does not set a required room size or viewing distance. Compare the television's outside width and height with the wall or furniture where it will sit, and consider where viewers will be seated. Resolution, content, seating position, and personal preference all affect the viewing experience.
The calculated screen rectangle is a useful first visual reference. Use the model-specific cabinet dimensions for a fit check, and account for the stand or wall mount separately.
An ideal 16:9 screen with an exact 43-inch diagonal is about 37.48 inches wide. The full TV cabinet may be wider; Sony's cited example measures 37.75 inches wide.
The screen-only calculated height is about 21.08 inches. Sony's example is 22.5 inches tall without its stand and 24.75 inches with the stand.
Weight depends on the model. The Sony K-43S20M2 is listed at 17.2 pounds without its stand and 17.7 pounds with it.
That depends on the room layout, seating position, and preference. Compare the set's actual width and height with your space rather than relying on the diagonal label alone.
There is no one outside size for every 43-inch TV. The named Sony model measures 37.75 × 22.5 × 3.13 inches without its stand; other models differ.