Need a New TV? Find the Perfect Size for Your Room

Measuring Your TV Space and Choosing the Right Size

When shopping for a new TV, selecting the right dimensions to fit your space is just as important as understanding the technology inside. As someone who has tested TVs for nearly a decade, I’ve seen how crucial it is to buy a TV that fits your space rather than moving furniture around to accommodate an undersized or oversized screen. The TV is the centerpiece of your living room or den, so ensuring it fits perfectly is essential.

Before purchasing your next TV, take the time to measure the area where you plan to place it. Keep these measurements in mind while shopping. Over the years, I've refined this process into a science, and I’ll share everything you need to know.

How to Measure a TV and Determine the Right Size

The goal of measuring a TV or the space where it will go is to determine the screen size that suits your space. Similar to phones, laptop screens, and PC monitors, TV sizes are based on a diagonal measurement of the display. This number doesn’t correspond to the width or height of the TV, nor does it account for the frame around the display panel, known as the bezels.

Most TV manufacturers provide full dimensions—height, width, and depth—for every model. You can find these details in the tech specs section of the manufacturer’s website. When measuring the space for your TV, take the height and width of the area you want to fill. If you already have a TV in that spot and want the same size, simply measure its height and width. Modern TVs are quite thin, so depth usually isn't a major concern.

Make sure to measure the entire set, including the bezels. If you plan to place the TV on a stand, factor in the size of the base. Depending on the model, your TV may sit on small legs on either side or a central column. Either way, knowing how high it elevates the screen is important, especially if you're placing the TV inside an enclosed cabinet-style entertainment center.

Also, verify that your furniture can support the TV’s weight. For example, a modern 65-inch TV like the TCL QM8K weighs about 50 pounds with its integrated stand. In general, TVs get heavier as the screen size increases. Many stands are rated for specific maximum sizes, but I recommend checking the actual weight limit to ensure it can handle the TV, plus any additional items like a soundbar or game consoles. If in doubt, opt for a larger, sturdier stand to avoid potential collapses.

If you’re mounting the TV on a wall, mark the approximate center of the space within your measurements—halfway up and halfway across—to know where to install your VESA bracket. Also, make sure to choose a bracket that can support your new TV's weight and dimensions.

Don’t Forget About Viewing Distance

There are two key measurements you should take before choosing a TV. After determining the space for your TV, measure the distance between the TV and where you'll be sitting—whether it's a couch, chair, or another location.

According to the Society of Television and Motion Picture Engineers (SMPTE), your TV should occupy 30 to 40 percent of your field of vision. You can achieve this by sitting at a certain distance from the TV, depending on its size. It's easier to pick a TV that fits your living room setup than to adjust your furniture to match an ill-fitting screen, so measuring the viewing distance ahead of time is recommended.

Based on SMPTE's guidelines, the distance between you and the TV should be roughly three times the height of the TV screen. Multiply the height measurement you took earlier to determine how far away you should sit. You can also use a screen distance calculator to find the perfect match by inputting either the screen size or the viewing distance.

With both the TV dimensions and viewing distance in hand, you're ready to choose the right size for your next TV.

Understanding TV Screen Sizes

Modern TVs range from 32 inches to 115 inches, measured diagonally. The most popular sizes fall between 50 and 65 inches, which are large enough for a group to watch comfortably in an average-sized room. Larger TVs, such as those 75 inches and above, take up significant space and can transform any room into a private movie theater. However, they are best suited for large living rooms where viewers sit at least 10 feet away from the screen.

While larger screens used to be extremely expensive, you can now find a high-quality 98-inch TV from a reputable brand for under $3,000. If creating a screening room is part of your DIY dream, there’s never been a better time to start building it. Whether you need a compact model for a small space or a massive screen for a dedicated home theater, there’s a TV size that fits every need.