Question Convert Screen.height to constant physical size Points?

Hi, I've got a Canvas Scaler set to Constant Phyisical Size in Points units, so that I can show chat messages at the same size no matter the device. the Chat messages are displayed in a ScrollView Content holder.

All this works fine but I need to set the height of the Content holder to change it's height based on the screen height of the device.

Do do this I need to be able to convert Screen.height to my Constant Physical size units, which is Points. I understand that I need the dpi of the device in the calculation but am lost on what to do with dpi and Screen.height from there.

Can anyone help with the calculation needed?

 

OK, I think I got it:

It seems by definition there are 72 Points per inch.

From there I need to get the number of pixels per inch. The DPI of the device will give me that.

So the formula should be:

inches = Screen.Height / Device DPI
points = inches * 72

therefore, the screen height in points is:

points = ( Screen.Height / Device DPI ) * 72

How's my math - this is correct?