Aspect ratio calculator diagonal1/8/2023 ![]() So which aspect ratio is best for you? Today, the most commonly sold aspect ratios screens for home theaters are 16:9 Widescreen HDTV and the now growing 2.35:1 CinemaScope. Take the square root of your number, and that's the diagonal measurement of your screen.įor additional help in selecting materials, or projector screens in general, feel free to give us a call toll-free at Now, think back to those old grade school days and apply the Pythagorean theorem (height 2 plus width 2 equals diagonal 2). Measure your width and then multiply it by this fraction - this gives you the height. Turn your aspect ratio into a fraction, so 16:9 would become 16/9. This will give you the diagonal screen size, which is the most common measurement used when buying a screen.Ģ. Measure the length from the top-left to the bottom-right corner of your screen. Here's how to measure your projector screen size in two quick ways:ġ. If you already have a projector screen and want to replace it, but it's been a while, you'll want to grab a tape measure and make sure you get the proper replacement. ![]() Buy based on screen height and format support to avoid any issue. That's because width is typically set by screen height when you know the type of video you'll be watching. Now, we didn't talk about width directly when figuring out how to determine projector screen size. However, we should note that cinema viewing can have a lot more to do with personal preference, so you may find the 1/4 distance more visually appealing.
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