# How to calculate the size and distance of the home theater projection screen

Many friends will encounter some problems when purchasing the home theater projection screen. The more common one is how big the projection screen is, what material is good, and how far the distance can project a 120-inch screen. Here we Let me introduce how to calculate (see the relevant knowledge here to see here: "How to choose home theater curtain and related parameter calculation"). Usually we say that the 100-inch projection screen refers to the projection screen with a diagonal length of 100 inches, but in actual use, we need to convert him into a wide width, and the unit should be replaced by centimeters, 1 inch = 2.54 cm. 16:9

Length = diagonal x 0.8716

Width = diagonal x 0.4903

example:

100 inch screen

Length = 100 x 0.8716 = 87.16 inches = 87.16 x 2.54 = 221.39 (cm)

Width = 100 x 0.4903 = 49.03 inches = 49.03 x 2.54 = 124.54 (cm)

4:3

Length = diagonal x 0.8

Width = diagonal x 0.6

example:

100 inch screen

Length = 100 x 0.8 = 80 inches = 80 x 2.54 = 203.2 (cm)

Width = 100 x 0.6 = 60 inches = 60 x 2.54 = 152.4 (cm)

Alternatively, calculate the size of the projection screen by measuring the length and width:

4:3 screen size (inches) = [screen width (m) Ã— 5 / 4] Ã— 100 / 2.54

16:9 screen size (inches) = [screen width (m) Ã— 18.257 / 16] Ã— 100 / 2.54

The length and width of the common dimensions (size inch=width mm*length mm) are listed below, and the omission after the decimal point

4:3

45"x60"(75") = 1160x1530

50"x67"(84") = 1300x1710

60"x80"(100") = 1540x2030

72"x96"(120") = 1850x2440

81"x108"(135") = 2080x2740

90"x120"(150") = 2310x3050

108"x144"(180")= 2770x3660

120"x160"(200")= 3080x4065

16:9

41"x72"(82") = 1591x1830

45"x80"(92") = 1702x2030

49"x87"(100") = 1798x2210

59"x105"(120") = 2051x2660

Attach a calculation tool for the projection distance and screen size of each brand model http://

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