A 140 cm TV is 55 inches. The screen is 121.9 cm wide and 68.6 cm tall.
A 140 cm TV is a 55-inch TV. The exact diagonal of a 55-inch screen is 139.7 cm, which rounds to 140 cm. When a retailer in Europe or another metric country lists a TV as 140 cm, it is referring to a standard 55-inch model. The difference of 3 mm is within normal rounding and is not a separate size.
The 55-inch is the most popular TV size in the world. At 121.9 cm wide, it fits on most standard TV units and living room walls, and the 2.1–3.5 m viewing distance suits a typical living room sofa position well.
Use the calculator below to check dimensions for this or any other size, or see the full TV size calculator.
Common sizes:
| Measurement | Centimetres | Inches |
|---|---|---|
| Width | 121.7 cm | 47.9 in |
| Height | 68.5 cm | 27.0 in |
| Diagonal | 139.7 cm | 55.0 in |
| Size (inches) | Diagonal (cm) | Width (cm) | Height (cm) |
|---|---|---|---|
| 43″ | 109.2 cm | 95.2 cm | 53.5 cm |
| 50″ | 127.0 cm | 110.7 cm | 62.3 cm |
| 55″ (140 cm) | 139.7 cm | 121.7 cm | 68.5 cm |
| 65″ | 165.1 cm | 143.9 cm | 80.9 cm |
| 75″ | 190.5 cm | 166.0 cm | 93.4 cm |
A 140 cm TV is a 55-inch TV. The diagonal of a standard 55-inch screen is 139.7 cm — the 140 cm figure is simply that number rounded up. Dividing 140 by 2.54 gives 55.12 inches, which is the same screen: 55 inches. This rounding convention is common in European retail, where screen sizes are sometimes advertised in centimetres rather than inches. A 140 cm listing and a 55-inch listing refer to the same product.
A 140 cm (55-inch) TV with a 16:9 aspect ratio is approximately 121.9 cm wide and 68.6 cm tall, screen only. These figures use the exact diagonal of 140 cm in the calculation. For comparison, the standard 55-inch measurement gives 121.7 cm — the tiny difference reflects the 3 mm rounding. The full product width including the bezel is typically 125–130 cm. For shelf or wall planning, check the manufacturer's total product dimensions.
For a 140 cm (55-inch) TV, the recommended viewing distance is between 2.1 m and 3.5 m. This is based on 1.5× to 2.5× the screen diagonal. For 4K Ultra HD content, sitting at 2.1 m is comfortable — the high pixel density prevents visible grain at close range. For standard HD content, 2.5–3.0 m provides a sharp, relaxed picture. At viewing distances beyond 3.5 m a 65-inch screen may give a better experience.
Yes, 140 cm and 55 inches refer to the same TV. A 55-inch screen has a diagonal of exactly 139.7 cm (55 × 2.54), which rounds to 140 cm. The difference of 3 mm is trivially small and has no practical significance for buying, installation, or viewing. European retailers sometimes list the same model with a cm figure in one market and an inch figure in another — if the values round to each other, they are the same screen.