Enter a couple of numbers for your display, and it will tell you the width and height, and the DPI. Simple.

Pixels wide Pixels high

Diagonal (" or cm)

Display name

Name Pixels DPI Diagonal SizePixel Count
19" 4:3 1280x1024 86 19.0" (48.3 cm) 14.8" x 11.9" (37.7cm x 30.1cm) 1310720
20" 4:3 1600x1200 100 20.0" (50.8 cm) 16.0" x 12.0" (40.6cm x 30.5cm) 1920000
Thinkpad t60 1400x1050 124 14.1" (35.8 cm) 11.3" x 8.5" (28.7cm x 21.5cm) 1470000
macbook 1280x800 115 13.1" (33.3 cm) 11.1" x 6.9" (28.2cm x 17.6cm) 1024000
ibook 1024x768 106 12.1" (30.7 cm) 9.7" x 7.3" (24.6cm x 18.4cm) 786432

See some scale comparisons.

Matt Johnston
matt .. ucc . asn . au