17.3 Inch Laptop Screen Dimensions
A 17.3 inch laptop has a screen 15.1 in38.3 cm wide and 8.5 in21.5 cm tall (38.3 cm15.1 in x 21.5 cm8.5 in). The 17.3 inches is measured diagonally across the glass, corner to corner. The laptop itself is always a little bigger than these numbers.
Below you can see it to scale, with the exact screens of popular 17.3 inch laptops. You will also find the viewing distance and resolution that suit this size.
- Width
- 15.1 in 38.3 cm
- Height
- 8.5 in 21.5 cm
- Diagonal
- 17.3 in 43.9 cm
- Aspect ratio
- 16:9
How big is a 17.3 inch laptop screen?
Here it is drawn to scale against the largest size in our chart, the 18 inch. The screen covers 128 sq in825 sq cm, 11% more than a 16 inch laptop.
- Diagonal
- 17.3 in (43.9 cm)
- Width
- 15.1 in38.3 cm · 38.3 cm15.1 in
- Height
- 8.5 in21.5 cm · 21.5 cm8.5 in
- Screen area
- 128 sq in825 sq cm
- Aspect ratio
- 16:9
- Perimeter
- 47.1 in119.7 cm
Who is a 17.3 inch laptop for?
A 17.3 inch laptop is built to replace a desktop computer more than to travel. The large body leaves room for a full keyboard with a number pad. Many use 16:9 and 1920 × 1080, so text is big and easy to read.
Which popular laptops have a 17.3 inch screen?
Laptops with the same screen size can differ by an inch or more in width and depth. Check the maker's spec sheet before you buy a sleeve. Here are the exact screens of popular 17.3 inch laptops.
Models sold as 17.3 inch can measure a little more or less. The width and height come from each model's own resolution.
Our list has five 17.3 inch models, from HP, Acer and ASUS. 1920 × 1080 is the most common resolution, on four of them. Four models share the sharpest screen, at 127 PPI.
The HP OmniBook 3 17 (17t-dg000) has the softest, at 106 PPI. At a typical 18 in46 cm, you could make out single pixels on every one of them with 20/20 vision.
How far should you sit from a 17.3 inch laptop?
A laptop usually sits 14 to 24 in (36 to 61 cm) from your eyes. The table shows how much of your view a 17.3 inch screen fills at each distance. It feels very wide at 14 to 16 in36 to 41 cm, wide at 18 to 20 in46 to 51 cm and ideal at 22 to 24 in56 to 61 cm.
Which resolution suits a 17.3 inch laptop?
Higher resolution looks sharper but makes text smaller, so you need display scaling. At 17.3 inches, 1366 × 768 gives 91 PPI and 3840 × 2160 gives 255 PPI. The table shows the Windows scaling each needs.
Sit farther away than the last column and you will not see single pixels. See every resolution in the chart.
At this size, 3840 × 2160 hides single pixels at every laptop distance. 2560 × 1440 hides them from about 20 in51 cm. 1366 × 768 and 1920 × 1080 show them even at 24 in61 cm.
At 275% scaling, 3840 × 2160 draws everything nearly three times as big, so its extra pixels go to sharpness, not space. Only 1366 × 768 runs at 100%, which fits the most on screen with small text.
How does a 17.3 inch laptop compare with other sizes?
The next size up, the 18 inch laptop, has 14% more screen area. The next size down, the 16 inch laptop, has 10% less screen area. Area grows with the square of the diagonal, so a few inches feel bigger than they sound.
It comes eighth of the nine laptop sizes in our chart, counting up from the smallest. The 16 inch laptop, the next size down, uses the 16:10 shape instead of 16:9. It is about an inch and a half narrower and about a tenth of an inch shorter, with about a tenth less screen area.
The 18 inch laptop, the next size up, uses the 16:10 shape instead of 16:9. It is about a fifth of an inch wider and about an inch taller, with about a tenth more screen area.
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Affiliate linksMore questions about 17.3 inch laptops
What are the dimensions of a 17.3 inch laptop screen in cm?
The screen is 38.3 x 21.5 cm, with a diagonal of 43.9 cm.
Is a 17.3 inch laptop 17.3 inches wide?
No. 17.3 inches is the screen diagonal, and the screen is 15.1 in wide.
What resolution is best for a 17.3 inch laptop?
1920 × 1080 gives 127 PPI at this size, which suits 125% Windows scaling. Higher resolutions look sharper but use more battery.
How much of my view does a 17.3 inch laptop fill?
At 18 inches (46 cm) from your eyes, the screen fills about 45° of your view. Plug in a monitor if you want a bigger picture at a desk.
How we measure
Screen width = diagonal x a / sqrt(a^2 + b^2) and height = diagonal x b / sqrt(a^2 + b^2) for an a:b screen. Viewing angle = 2 x arctan(half the screen width / distance). Pixel visibility uses 1 arcminute, the limit of 20/20 vision.
Model screens come from each maker's published spec sheet, linked in the table. Last checked 2026-10-13.