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Choosing the right TV size for your room

Here's some useful tips on how to choose the right TV size for your room, based on the viewing distance, screen resolution, and TV size. Learn how to balance these factors to get the best viewing experience possible, allowing you to put more of your budget into picture quality and features.

Things to Consider

The key factors for choosing a TV for a room are the viewing distance, screen resolution, and TV size.  The perfect TV for a room will be a balance of all three and finding that balance will allow you to put more of your budget towards better picture quality or premium features.

Viewing Distance

You'll need to measure the distance between where you want your TV and where you'll be sitting.  Ideally the TV will be at eye level face on to the viewer.  TVs can be mounted to a wall, positioned on top of a cabinet, or better yet mounted to a motorised TV Lift, allowing it to be concealed in a cabinet.

Generally, there's only ever one perfect viewing position in any room, so you can either use that or an average of the different seating positions for your measurement.

Screen Resolution

The image displayed on a TV is formed of millions of individual pixels, each one capable of displaying its own colour, the higher the resolution, the more of those pixels on the screen. Most TV resolutions today are at least 4k, also known as Ultra HD, this means that there are 3,840 horizontal and 2160 vertical pixels for a total of well over 8 million.  In comparison, Full HD (1080p) screens will have 1/4 the number of pixels and the newer 8k screens will have 4x as many, that's over 33 million!

TV Size

TVs are available in a broad range of sizes, but they mostly only come in 3 different screen resolutions.  1080p (Full HD), 4k (Ultra HD) and the newer 8k.  Any particular screen resolution is available in multiple sizes.  Whilst the screen size changes, the number of pixels does not.  This is referred to as pixel density and it's important to consider when choosing the right TV size for your room.  If you're too close to a large TV, you may start to notice the gaps between pixels which almost looks like you're looking at the TV through a fine mesh.  This means you don't want a TV that's too large for your viewing distance.

Putting it all Together

According to the Society of Motion Picture and Television Engineers, you get a good experience when a screen fills up a minimum of 30° of your field of view.  This works well for viewing a mix of television shows and films, but if you mostly watch movies then 40° is the recommendation from THX and for cinemas.  So, with all this information we can calculate the right size TV for any viewing distance with a bit of trigonometry and maths, but we're not going to force you to do that.

TV Size Calculator

Simply enter your measured viewing distance and we'll let you know the ideal size TV for your room, simple and easy!

Viewing Distance (in meters)

30° angle 40° angle
Ideal Size
Suggested Size

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Rocburn Limited

Unit 5 Sutton Park, Sutton Road, Southend-on-Sea, SS2 5NX

01702 826 267