TV size guide
55 Inch TV Dimensions: Width, Height and Viewing Size
Use this guide when a product listing only gives the diagonal size and you need the real wall, cabinet or media-console footprint.
Quick answer
A 55 inch 16:9 TV has a visible screen about 47.94 inches wide and 26.96 inches tall, or about 121.8 x 68.5 cm. The bezel and stand are not included.
How the 55 inch TV size is calculated
TV size is measured by the screen diagonal, not by the outer product width. For a standard 16:9 panel, the diagonal, width and height form a right triangle.
The width is diagonal x 16 / sqrt(16^2 + 9^2). The height is diagonal x 9 / sqrt(16^2 + 9^2). Using 55 inches gives 47.94 inches wide and 26.96 inches tall.
What to measure before buying
Measure the available cabinet or wall space, then add the manufacturer bezel and stand dimensions from the product sheet. The visible screen is smaller than the physical product.
If the TV is mounted in a recessed space, leave extra room for ventilation, cable access and small installation errors.
55 inch 16:9 TV quick reference
| Measurement | Inches | Centimeters |
|---|---|---|
| Width | 47.94 | 121.8 |
| Height | 26.96 | 68.5 |
| Diagonal | 55.00 | 139.7 |
Frequently asked questions
Is a 55 inch TV exactly 55 inches wide?
No. The 55 inch measurement is the diagonal. The visible screen width is about 47.94 inches for a 16:9 TV.
Does this include the bezel?
No. This is the visible rectangular image area. Check the product dimensions for the outer frame and stand.
How far should I sit from a 55 inch TV?
A relaxed 30 degree field of view is about 7.45 ft. A more immersive 40 degree setup is about 5.49 ft.