The math
cm = in × 2.54
55 × 2.54 = 139.7 cm = 1,397 mm
Screen size for a 55-inch diagonal
| Aspect ratio | Width × Height (cm) | Width × Height (in) |
|---|---|---|
| 16:9 | 121.8 × 68.5 cm | 47.9 × 27 in |
| 21:9 | 128.7 × 54.3 cm | 50.7 × 21.4 in |
| 16:10 | 118.5 × 74 cm | 46.6 × 29.1 in |
| 4:3 | 111.8 × 83.8 cm | 44 × 33 in |
Common TV and monitor sizes
| Diagonal | Diagonal (cm) | 16:9 · Width × Height |
|---|---|---|
| 24 in | 61 cm | 53.1 × 29.9 cm |
| 27 in | 68.6 cm | 59.8 × 33.6 cm |
| 32 in | 81.3 cm | 70.8 × 39.8 cm |
| 40 in | 101.6 cm | 88.6 × 49.8 cm |
| 43 in | 109.2 cm | 95.2 × 53.5 cm |
| 48 in | 121.9 cm | 106.3 × 59.8 cm |
| 50 in | 127 cm | 110.7 × 62.3 cm |
| 55 in | 139.7 cm | 121.8 × 68.5 cm |
| 65 in | 165.1 cm | 143.9 × 80.9 cm |
| 75 in | 190.5 cm | 166 × 93.4 cm |
| 77 in | 195.6 cm | 170.5 × 95.9 cm |
| 85 in | 215.9 cm | 188.2 × 105.8 cm |
Related conversions
- 11 in → cm
- 12 in → cm
- 32 in → cm
- 43 in → cm
- 50 in → cm
- 65 in → cm
- Inches to cm
- Screen Size & PPI
- All conversions
Frequently asked questions
How many cm is 55 inches?
55 inches is exactly 139.7 cm. One inch is defined as 2.54 cm, so multiply 55 by 2.54.
How wide is a 55-inch TV?
About 121.8 cm (47.9 in) wide and 68.5 cm (27 in) tall for a 16:9 screen, not counting the frame.