Black Friday 2026 TV size guide: what 55, 65 and 75 inches mean in cm

The sizes people search for most

On this site, the TV pages for 32″, 43″, 50″, 55″ and 65″ inches get the most search impressions, so those are the sizes people most often want to convert. Typically 55 and 65 are the mainstream sizes, 43 and 50 are common second-room sets, and 75 and above keep getting cheaper per inch.

Whatever the discount, a TV is only a good deal if it fits the room, the furniture and your viewing distance.

Size, dimensions and viewing distance

A five-minute checklist before you buy

• Measure the wall or cabinet in cm first, then compare with the width column above, not with the diagonal.
• Check the stand: the foot spacing must fit your furniture. For a 65-inch TV that usually means a surface at least 155 cm wide (see how wide a TV stand needs to be).
• Sit where you normally watch and measure the distance to the screen. A rough guide is 1.2 to 1.6 times the diagonal, so a 55-inch TV suits about 1.7 to 2.2 m.
• Look at the box dimensions too. A large TV box is wider than the screen and has to fit your car and your doorways.
• Find the exact model number on the listing. Sales often use special variants whose specs differ from the regular model of the same size.

Is bigger always better?

Not if the room is small. In a bedroom where you sit 2 m from the screen, a 65″ TV is already 143.9 cm wide, which fills a large part of your view. A 50″ or 55″ set is easier on the eyes and on the budget.

The opposite mistake is also common: a 43-inch TV in a big living room looks small within a week. Use the viewing-distance column and your real seating position to decide.

How to convert any size you find

Listings in other countries state size in centimeters, and some quote inches only. To convert, multiply the inches by 2.54, or use the inches to cm converter. For a full chart from 24 to 100 inches, see the TV size chart, and if you are unsure how a diagonal turns into a width, read how to measure a TV screen.