40 inch TV dimensions
A 40-inch TV has a screen 34.9" wide and 19.6" tall (89 × 50 cm). The best seat is roughly 4 ft to 5 ft 5 in away.
Screen size
| Inches | Centimetres | |
|---|---|---|
| Width | 34.86" | 88.6 cm |
| Height | 19.61" | 49.8 cm |
| Diagonal | 40" | 101.6 cm |
| Screen area | 684 sq in | 0.44 m² |
| Aspect ratio | 16:9 | |
To scale
How far to sit from a 40" TV
| Seat | Distance |
|---|---|
| Immersive (THX 40°) | 4 ft |
| Relaxed (SMPTE 30°) | 5 ft 5 in |
| Every 4K pixel visible within | 2 ft 7 in |
| Every 1080p pixel visible within | 5 ft 2 in |
Is a 40" TV right for your room?
One of the smallest sizes where 4K is widely sold, though plenty of 40-inch models are still Full HD. Popular for bedrooms and small lounges. At 5 ft 5 in or less from the sofa it suits bedrooms and compact lounges.
Allow at least 36.4" of wall or cabinet width. With the screen centre at a seated eye height of about 42", the top edge sits near 52" from the floor.
40" against the next sizes
Popular comparisons
Questions
How wide is a 40 inch TV?
The screen of a 40-inch TV is 34.86" (88.6 cm) wide. Frames add roughly 0.4"–1.5", so the TV itself is about 36" wide.
How tall is a 40 inch TV?
The screen is 19.61" (49.8 cm) tall; on its stand the set usually stands 23"–26" high.
How far should you sit from a 40 inch TV?
Between about 4 ft (THX, immersive) and 5 ft 5 in (SMPTE, comfortable). It suits bedrooms and compact lounges.