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15.6″ laptop screen dimensions
A 15.6″ screen is about 34.5 × 19.4 cm on a 16:9 panel, or 33.6 × 21.0 cm on a 16:10 panel. Aspect ratio matters — many modern laptops use the taller 16:10.
34.5×19.416:9 (cm)
33.6×21.016:10 (cm)
39.6 cmdiagonal
Screen size by aspect ratio
| Aspect ratio | Width | Height | Used by |
|---|---|---|---|
| 16:9 | 34.5 cm | 19.4 cm | many Windows laptops |
| 16:10 | 33.6 cm | 21.0 cm | MacBooks, newer premium laptops |
This is the screen, not the laptop. The chassis (lid) is bigger — bezels add roughly 1–2 cm each side, so a 13.3″ laptop is often ~30 × 21 cm closed. For sleeve or bag fit, use the laptop's listed dimensions, not the screen size.
Frequently asked questions
How big is a 15.6″ laptop screen in cm?
About 34.5 × 19.4 cm on 16:9, or 33.6 × 21.0 cm on 16:10.
What size sleeve for a 15.6″ laptop?
Go by the laptop's chassis size, not the screen — a 15.6″ laptop is typically a couple of cm larger each way than the screen figure.
What's the difference between 16:9 and 16:10?
16:10 is taller for the same diagonal — more vertical space for documents and code. MacBooks and many premium laptops use it.