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Screen size calculator
Screen diagonal
mm
inch
foot
meter
Resolution
Calculate screen size !
Screen size
Aspect ratio:
1.666667
(landscape orientation)
Screen dimensions
mm
inch
foot
meter
Screen diagonal
178
mm
7
"
0.58
ft
0.18
m
Screen width
153
mm
6
"
0.5
ft
0.15
m
Screen height
91.5
mm
3.6
"
0.3
ft
Screen surface
21.6
sq.in.
0.15
sq.ft.
Pixel density
Megapixels:
0.4 MP
(384,000 pixels)
Pixel size =
0.191
mm
Pixel density =
133.3
dpi (dots-per-inch)
Pixel density =
5.2
dpmm (dots-per-mm)
Viewing distance
Viewing distances
mm
inch
foot
meter
Minimum viewing distance
max 70° viewing angle for full field-of-view experience
109
mm
4.29
"
0.36
ft
0.11
m
Visual Acuity minimum distance
pixel < 1/60° so that individual pixels cannot be seen
655
mm
25.8
"
2.15
ft
0.66
m
Ideal viewing distance
30° viewing angle for full field-of-view experience
285
mm
11.2
"
0.93
ft
0.28
m
Maximum viewing distance
min 26° viewing angle for full field-of-view experience
330
mm
13
"
1.08
ft
0.33
m
Examples
Digital TV:
32" HD
•
40" HD
•
43" HD
•
55" 4K UHD
•
65" 4k UHD
•
75" 8K UHD
Ultrawide 4K:
34" gaming monitor
•
49" gaming monitor
Apple:
21.5" iMac
•
27" iMac Retina
•
27" 5K iMac Pro
•
32" Pro Display XDR
Digital cinema:
20ft 2K scope
•
24ft 2K flat
•
80ft IMAX Laser 4K
Digital Signage (vertical):
55" Full HD portrait
•
65" 4K portrait
Apple Watch:
40mm Series 5
-
44mm Series 5
IoT:
7" Raspberry Pi screen