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13″ (13.3) laptop screen dimensions
A 13″ (13.3) screen is about 29.4 × 16.6 cm on a 16:9 panel, or 28.6 × 17.9 cm on a 16:10 panel. Aspect ratio matters — many modern laptops use the taller 16:10.
29.4×16.616:9 (cm)
28.6×17.916:10 (cm)
33.8 cmdiagonal
Screen size by aspect ratio
| Aspect ratio | Width | Height | Used by |
|---|---|---|---|
| 16:9 | 29.4 cm | 16.6 cm | many Windows laptops |
| 16:10 | 28.6 cm | 17.9 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 13″ (13.3) laptop screen in cm?
About 29.4 × 16.6 cm on 16:9, or 28.6 × 17.9 cm on 16:10.
What size sleeve for a 13″ (13.3) laptop?
Go by the laptop's chassis size, not the screen — a 13″ (13.3) 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.