15 Inch Laptop Size
38.1 cm diagonal ยท 33.2 ร 18.7 cm
Diagonal
38.1 cm
15 inch
Width
33.2 cm
16:9
Height
18.7 cm
16:9
Screen area
0.06 mยฒ
excluding bezel
16:9 aspect ratio, screen area only (bezel excluded)
Size compared with A4 paper
Aspect ratio comparison
| Ratio | Width (cm) | Height (cm) | Notes |
|---|---|---|---|
| 16:9 | 33.2 | 18.7 | most common at 15″ |
| 16:10 | 32.3 | 20.2 | some models |
Two laptops of the same 15-inch diagonal can differ in width and height when their aspect ratios differ. A 16:10 panel is taller, which suits document work.
Chassis and bag size
Chassis width
~34.7 cm
including bezel
Chassis depth
~22.7 cm
lid closed
Bag interior
36.7 ร 24.7 cm+
with clearance
Chassis and bag figures are estimates based on typical bezel allowances. Actual products vary by 1–3 cm, so check the manufacturer spec before buying.
Compared with other sizes (16:9)
15 inch laptop dimensions
A 15 inch laptop has a screen diagonal of 38.1 cm (15 ร 2.54). At a 16:9 aspect ratio the panel measures 33.2 cm wide by 18.7 cm tall. Screen sizes are always quoted as the diagonal, never the width.
This size is usually 15.6 inches in practice; "15-inch" is a colloquial label. When choosing a sleeve or bag, measure against the chassis rather than the screen: look for an interior of at least 36.7 ร 24.7 cm.
FAQ
How many cm is a 15 inch laptop?
The screen measures 38.1 cm diagonally, since one inch is 2.54 cm. At 16:9 that works out to 33.2 cm wide and 18.7 cm tall.
Is the inch measurement the width?
No. For laptops, monitors and TVs the inch figure is always the diagonal. A 15 inch screen is only 33.2 cm wide.
What bag size fits a 15 inch laptop?
The chassis is roughly 34.7 ร 22.7 cm, so an interior of 36.7 ร 24.7 cm or larger works well. Allow extra room for thicker gaming laptops.
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