How to choose the right TV size for your room
Bigger isn't always better — but most people buy smaller than they should. A simple way to match screen size to seating distance.
Screen size is the first decision most TV buyers make, and it's easy to get wrong. The right size depends mainly on how far you sit from the screen and the TV's resolution.
The seating-distance rule
For a 4K TV, a comfortable starting point is to sit about 1 to 1.5 times the screen's diagonal away. That means:
- Sitting around 1.5–2 m away → a 50–55 inch TV
- Around 2–2.5 m → 55–65 inches
- Around 2.5–3 m → 65–75 inches
Sitting closer makes a film feel more immersive; sitting further is more relaxed for everyday TV. With lower resolutions, sit a little further back.
Measure the space
Check the wall or stand width, and remember the TV's actual width is larger than the diagonal suggests: a 55-inch TV is roughly 1.23 m wide. Leave room for a soundbar if you plan to add one.
Viewing height
The centre of the screen should be close to eye level when seated. Mounting a TV high above a fireplace or cabinet can strain your neck.
Room brightness
In a bright room, a larger screen needs to be bright enough to stay visible. A slightly smaller but brighter model can be a better choice than a huge dim one.
Budget trade-off
If you must choose, a good mid-size TV with better picture quality usually beats a bigger TV with a poor panel.
The bottom line
Measure your seating distance, pick the largest size that fits comfortably within that range, and prioritise picture quality over the last few inches.