10
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My laptop is HP 250 G2 with 15.6” diagonal LED-backlit HD2 anti-glare (1366 x 768). Please How do I know the dpi value?
X09
Posted 2016-06-05T18:46:36.583
Reputation: 203
How do I know the dpi of my laptop screen
Answers
19
1366 x 768 pixels is 1567 pixels diagonally (Pythagorean theorem, √(13662+7682)=1567; and you thought you would never use that).
If the screen measures 15.6" diagonally, 1567 pixels / 15.6" is approximately 100 pixels per inch.
You won't get an exact PPI number unless the manufacturer publishes it or you measure the screen. The advertised diagonal measurement is often a nominal number and may include a little of the display panel behind the bezel.
fixer1234
Posted 2016-06-05T18:46:36.583
Reputation: 24 254
3Never thought pythagorean theorem has something to do with displays! – Mohammed Shareef C – 2017-06-13T06:58:25.637
3Pythagorean theorem has everything to do with Euclidean spaces, such as monitor surface – amuliar – 2017-12-29T17:32:04.990
8
Assuming you are using Windows 7:
- Go to
Control Panel>Appearance and Personalization>Display - In the left(blue) column, click
Set custom text size(DPI)
A window titled Custom DPI Scaling will pop up.
It will show what percent of the "normal size"(default monitor DPI) it is scaled to and will allow you to adjust it.
You should see a ruler in the middle. Below that it will say 9 point Segoe UI at X pixels per inch.
The X is your current DPI.
Anonymous
Posted 2016-06-05T18:46:36.583
Reputation: 189
Which version of windows? Mine says "9 point Segoe UI" rather than at X pixels per inch. – Journeyman Geek – 2016-06-05T23:31:27.520
Windows 7. The exact message it says on my computer is "9 point Segoe UI at 144 pixels per inch" – Anonymous – 2016-06-08T23:09:58.983
1Might be worth mentioning the version then. Its not there in windows 10. – Journeyman Geek – 2016-06-08T23:20:58.963
OK. Updated my answer. – Anonymous – 2016-06-09T00:59:03.060
2
as of DPI Calculator
- Display size: 13.6" × 7.65" = 103.96in² (34.54cm × 19.42cm = 670.72cm²)
- DPI = PPI = 100.45
- 0.2529mm dot pitch, 10091 PPI²
Fabian
Posted 2016-06-05T18:46:36.583
Reputation: 61
1
Try yourself: DPI Calculator
Formula:
PPI = √(pixels_horizontal^2 + pixels_vertical^2) / inches_diagonal
PPI = √(13662 + 7682) / 15.6 = 100.45
Therefore, 100.45 dpi
Raktim Biswas
Posted 2016-06-05T18:46:36.583
Reputation: 247
1
For you It would be 100 ppi/dpi. Calculated using this website.
– TheKB – 2016-06-15T18:41:27.507