: Is there a math formula to make font the same actual size on a 55" and 65" monitor hung next to eacother? So I have a 65" screen and a bunch of 55" screens (1080x1920) in these big panels.

@Steve758

If a is the aspect ratio (W/H) of your display, then

D²=W²+H² => D²=H²*(1+a²)


hence

H=D/sqrt(1+a²)


With two displays:

H₁/H₂=(D₁/D₂)*sqrt((1+a₂²)/(1+a₁²))


And if the aspect ratios are the same (a₁==a₂), you get the simple:

H₁/H₂=D₁/D₂

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@Angela777

The height of an display is

h(d) = d * cos( tan^-1 ( a / b))


Here, d = 55" is the diagonal of the screen in inches, and a = 1920 and b = 1080 are the horizontal and vertical number of pixels. tan^-1 is the inverse tangens or arctangens. You can use WolframAlpha to calculate this.

h(55") = 26.96"
h(65") = 31.87"


Thus, you get your desired ratio by h(65") / h(55") = 1.18.

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@Courtney577

If you know the physical width and height dimensions of the TV screen then you can just make the working file that size and then export at 1920x1080 pixels.

The left is a 55" TV and the right is 65".



I got the dimensions from Wikipedia - Display size

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