Screen size calculator

Screen size

Screen dimensionsmminchfootmeter
Screen diagonal40mm1.57"0.13ft
Screen width25.4mm1"
Screen height30.9mm1.22"
Screen surface785mm²1.22 sq.in.

Pixel density

Pixel size = 0.078 mm
Pixel density = 323.9 dpi (dots-per-inch)
Pixel density = 12.8 dpmm (dots-per-mm)

Viewing distance

Viewing distancesmminchfootmeter
Minimum viewing distance
max 70° viewing angle for full field-of-view experience
18.1mm0.71"
Visual Acuity minimum distance
pixel < 1/60° so that individual pixels cannot be seen
270mm10.6"0.88ft0.27m
Ideal viewing distance
30° viewing angle for full field-of-view experience
47.4mm1.87"0.16ft
Maximum viewing distance
min 26° viewing angle for full field-of-view experience
55mm2.17"0.18ft

Examples