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40 inch TV dimensions – size explained in cm, inches, mm

Just how big is a 40 inch TV?

Updated: Aug 4, 2023 10:53 am
40 inch TV dimensions – size explained in cm, inches, mm

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The beauty of a 40-inch TV lies not only in its size but in its applicability. It offers a level of immersion that is not big, not small, but just right. For many, a 40-inch TV is a sweet spot between the intimacy of a smaller screen and the sheer presence of a larger one. For smaller living spaces, a 40″ display could be the perfect match for you, but you probably want to know all about how it measures up.

No matter if you have an OLED, Mini LED or good old LED display, screen sizes are quite uniform. So, go ahead and see how the dimensions of a 40 inch TV works out in our quick and easy guide.

How big is a 40 inch TV in cms, inches and mm?

40 inch TV dimensionsWidthHeightDiagonal
Inches34.919.640
Centimeters88.649.8101.6
Millimeters8864981016

A 40-inch TV’s diagonal measurement in cm is close to 102, a dimension that speaks to the balance and proportion of this modestly sized screen. As for width, it would be 89 cm – modest enough again. It’s not just about the numbers, though. A 40-inch TV is a window into another world, a portal to adventure and excitement, a gateway to the things that captivate our imagination and feed our souls. If you want to be poetic, anyway.

How wide is a 40 inch TV?

If you want to now how wide a 40 inch TV is, assumedly for the purpose of fitting it where you want it to go, then you need to a take a look at the width. For exact measurements, the width is 88.6cm / 886mm, or 34.9 inches. These values refer to the size of the screen itself, so you need to take into account additional bezel space and TV border – which isn’t much on modern displays, but can make a small difference. Even more so if speakers are a prominent feature on your TV.

Be sure to measure your available space accordingly before you splash out on a new TV. Even though a 40″ inch is towards the lower end of the spectrum these days, it’s still a decent amount of space that you have to account for – especially if you are placing it on a stand or unit.

40 inch TV benefits

With its tight footprint, a 40-inch TV can easily slip into tight spaces, yet its size allows it to project a powerful image.

The crisp, clear display will ferry you to another place, whether it’s a forest, a battlefield, or a city skyline. You’ll feel as though you’re right there, in the thick of it all, surrounded by the sounds, sights, and emotions of the scene. Does the size make a 40-inch TV worse in any way? Nonsense. Beautiful modern technology rules every smart TV, regardless of its dimensions. On a 40-inch TV, you’ll have Netflix, Amazon Prime Video, Disney+, and many other streaming services, as well as a wealth of other apps and games.

You can even browse the internet and check your social media on the big screen, making it an all-around and convenient option for today’s tech-savvy consumer. A bit for our ears – a good 40-inch TV is more than just a visual feast. It can also deliver an auditory assault, with powerful speakers that your hearing system will only thank you for. You’ll hear every explosion, every whisper, and every note, in immersive, crystal-clear detail.

So if you’re looking for a TV that’s the perfect balance of size, style, and performance, look no further than a 40-inch display. It’s the epitome of effortless elegance, delivering a viewing experience that’s extraordinary by all accounts.

40 inch TV FAQs

Can you wall mount a 40 inch TV?

Yes, you should be able to wall mount most modern 40 inch TVs. Many displays on the market now follow a VESA wall mount standard, so refer to your particular model to see what size of mount is required.

How close should you sit to a 40 inch TV?

There is no universally agreed viewing range, but many suggestions sit close to the 5 to 5.5 ft mark, which is close to up to 1.7 meters. For optimal viewing, be sure to allow for enough space when deciding where your 40 inch TV will go.

Related TV Dimension pages

Why not check out some of our in-depth guides around TV dimensions below:


For as long as he can remember, Charlie has always been interested in computers and gaming. It all started with the Sega Mega Drive and then evolved into PC gaming in his early teens.

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