Screen size calculator

Screen size

Screen dimensionsmminchfootmeter
Screen diagonal40"3.33ft1.02m
Screen width886mm34.9"2.91ft0.89m
Screen height498mm19.6"1.63ft0.5m
Screen surface684 sq.in.4.75 sq.ft.0.44

Pixel density

Pixel size = 0.461 mm
Pixel density = 55.1 dpi (dots-per-inch)
Pixel density = 2.2 dpmm (dots-per-mm)

Viewing distance

Viewing distancesmminchfootmeter
Minimum viewing distance
max 70° viewing angle for full field-of-view experience
632mm24.9"2.07ft0.63m
Visual Acuity minimum distance
pixel < 1/60° so that individual pixels cannot be seen
62.4"5.2ft1.59m
Ideal viewing distance
30° viewing angle for full field-of-view experience
65.1"5.42ft1.65m
Maximum viewing distance
min 26° viewing angle for full field-of-view experience
75.5"6.29ft1.92m

Examples