That's it! The optimal distance from the TV is equal to 6.1 ft, while you can still sit as close as 5.7 ft to see all the details with the best quality. Knowing that the aspect ratio is 16 to 9 and the vertical resolution is equal to 1080p, the horizontal will be equal to 16/9 × 1080 = 1920p ĭivide this result by 60 to obtain the angle: 1920 / 60 = 32° Work out the horizontal resolution of the screen. Use the optimal TV distance formula: TVD = 0.5 × W / tan(θ/2) = 0.5 × 39.22" / 0.268 = 79.17" = 6.1 ft.Īdditionally, to find the minimal distance at which you should be able to watch with the best quality, let's follow these steps: We assume the best viewing angle in a home environment is θ = 30° As the diagonal is 45" long, and the aspect ratio is 16:9, the width is equal to W = 16 / √(16² + 9²) × 45" = 39.22" Let's choose a regular screen with 1080p Ĭalculate the width of the screen. Let's say it is 45" ĭecide on the resolution of your screen. Let's analyze the calculation process step by step, assuming you want to calculate what is the right distance to watch TV.īegin with measuring the TV screen size. You can use our TV size calculator or find the unknown values by hand. For different resolutions, this number is equal to: How many pixels are there on a screen, then? We need to take into account the number of pixels along the horizontal edge of a screen. On the other hand, if there are substantially more than 60 pixels per 1 degree, we won't notice it and appreciate the screen's high quality. If the resolution is lower and there are less than 60 pixels, we will say that the quality is not that great. That means that for each degree of our vision, there should be 60 pixels on the screen. One of the assumptions we use in our TV size calculator is that the human eye can correctly distinguish two things separated by an angular distance of ¹/₆₀ degree (our angular displacement calculator explains what angular distance is). The screen resolution determines the size of the pixels. If you look really closely at your TV, you will discover that the lines are a bit jagged because they consist of tiny squares. To prevent distortion, do not make pixels exceed either side of the source video frame. Select preset resolutions or customize resolutions fitting the ratio. All of these terms are just measures of the screen resolution – the number of pixels on the TV screen (if you know the number of pixels, you can obtain the resolution with our PPI calculator).Ī pixel is the smallest "dot" that the screen can accurately display. Go to 'Aspect Ratio', choose 16:9, 1:1, 4:3, 5:4, 16:10, 2.35:1, or any aspect ratio you need from the dropdown list. Each screen has some mysterious numbers describing it, and to top it off, some have these enigmatic "4K" or "Ultra HD" properties that don't mean anything to you. If you go shopping for a TV set, each screen's different characteristics are bound to give you a headache.
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