Generally speaking, you should place your TV around double the distance of the screen size away from your sofa. This sounds a bit confusing but it's quite simple. If you have a 60-inch TV, your sofa should be placed double the distance away - so 120 inches, or about 3 metres.
If you're buying a 55-inch or 65-inch TV (let alone anything bigger), then you should consider sitting at least 10 feet away from it in order to get maximum detail out of your picture. If you're buying a 32-inch TV, then you should look for one that has a diagonal measurement of at least 26 inches.
In general, TVs smaller than 50 inch are ideal for a bedroom or kitchen. TVs between 50 and 65 inches are more suitable for the living room. And if you are looking to create a home cinema, screens of 70 inch and up are the ideal choice. In this example a 4K screen is taken into account.
To get the best viewing experience, you want the middle of your TV to be at eye level, which is usually around 42 inches high. That means a 65-inch TV should typically be mounted about 25 inches from the floor to the bottom of the TV.
To calculate the suitable distance, multiply the TV screen size by 1.2. For a 75 inch TV, for example, this would mean sitting 90 inches or 2.3 meters away.
70-inch TV: A 70-inch TV is best if your sofa is around 14.4 feet (HD) or 8.9 feet (4K) away from the TV stand. 75-inch TV: This TV size is optimal if your viewing distance for HD is approximately 15.7 feet, and for 4K, it's about 9.5 feet.
Let Furniture Float
Don't push all your furniture up against the walls. Pull your sofa (or other seating) out at least 12″ from the wall. That's right; your couch doesn't have to be against the wall. It will make the space seem more inviting and cozy instead of creating a big bunch of weird dead space in the middle.
It's generally agreed by designers that sofas should not actually touch the wall. Even if they come close, you should leave at least a small gap between the couch and the wall. Whether you should arrange your furniture in the middle of the room or push it back closer to the walls can boil down to personal preference.
Place your TV out of high-traffic areas. There's nothing more frustrating than trying to watch TV while people keep walking past it. In general, your TV should be positioned facing your seating so you can comfortably watch it from your couch or chairs.
Consider the two thirds rule
A sofa that's the full length of the wall in front of which it is positioned could prove overbearing in a room scheme. But it's also the case that a sofa can look too small. One approach to getting the right proportions is to aim for a sofa that's about two-thirds of the wall length.
Recommended distance for viewing 4K TV is 1.5 times of the TV vertical screen size. Viewed from this distance, individual pixels cannot be differentiated by naked eyes. This means that pixels effectively disappear when viewing 4K images.
If your TV is your focal point, then place it in the center of the seating area. If you have another focal point such as a mantel or a beautiful window, then think about placing it on the wall adjacent to the focal point so it can still be viewed comfortably.
That's because you were forced to look up to watch the movie, and this can cause soreness after a while. For comfortable viewing, the middle of your TV screen when located in your entertainment unit should be at eye level or slightly below.
Staring up at a TV is like sitting in the front row of a movie theater. It's not ideal, not comfortable and not conducive to long viewing sessions. Generally speaking, you want the center of the TV to be about eye level, or even slightly lower. This is true whether you're mounting the TV or putting it on a stand.
For the best viewing experience, experts recommend you should mount your TV at eye level while seated. For the average person, this means the center of your screen should be 42 inches from the floor.
This means your largest piece of furniture – for example, a sofa – should measure 2:3 of the area. Then work your way backwards from there. The coffee table should be 2:3 the size of the sofa, and so on. Once the bigger pieces of furniture are placed, it's easier to work smaller, decorative pieces around them.
As Brianna Untener has commented above, couches that are raised off the ground can actually help a room feel bigger by creating more space. Interior designer, Jeanette Fusco, also supports this and says, 'a couch with legs or a raised base can create the illusion of more floor space. '
In fact, choosing a larger couch (as long as it physically fits in the room) over a smaller option can actually make the room look bigger. That's because people's gaze goes to the couch, and with a big couch, they see plenty of inviting room for getting comfortable.
'A sofa should be at least a foot from the window,' says Jen Ebert, Homes & Gardens Digital Editor. 'This allows for drapes to be pulled back and forth without catching, and also makes it easier to clean behind. Pulling a sofa away from a window by a foot will also enhance your living room's feeling of spaciousness.
'If foot traffic is expected behind the sofa, we recommend keeping at least three feet between the sofa and the window,' adds Anna Popov. 'If not, about a foot or more is fine — you want to leave open space to account for any kind of window treatment or drapes as well as to protect the wall and sofa from damage.
A sofa should be placed at the end of the room or near a wall so that you can still move around easily when sitting on it. The couch should never block your view of other parts of the room or obstruct any doorways or windows.