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1440px

MacBook Air 13″ (M1) Screen Size

CSS viewport, native resolution, pixel ratio and pixel density for the MacBook Air 13″ (M1) — the numbers you need to design and build for it.

CSS viewport · portrait
1440 × 900 px

Native resolution 2560 × 1600 px at 2× · 227 PPI · 13.3″ · 16:10. Design at 1440 × 900 and export assets at 2×.

MacBook Air 13″ (M1) display specifications
PropertyValue
CSS viewport (portrait)1440 × 900 px
CSS viewport (landscape)900 × 1440 px
Native resolution2560 × 1600 px
Device pixel ratio2×
Pixel density227 PPI
Screen diagonal13.3 in
Panel size11.28 × 7.05 in
Aspect ratio16:10
Total pixels4.1 MP
Released2020
Operating systemmacOS

Among the 37 desktop and laptop displays on this site, the MacBook Air 13″ (M1) has the 30th largest CSS viewport area. Its 1440 px width is 231 px below the 1671 px average for this category.

Targeting the MacBook Air 13″ (M1) in CSS

Device-specific media queries are brittle — a new model with the same width will not match. Use them for genuine per-device fixes only, and prefer width buckets for layout.

CSS media query
/* Target MacBook Air 13″ (M1) specifically */
@media only screen
  and (device-width: 1440px)
  and (device-height: 900px)
  and (-webkit-device-pixel-ratio: 2) {
  /* … */
}

/* More useful in practice — the width bucket it falls into */
@media (min-width: 1440px) { /* … */ }

Compare with other Mac & Displays models

MacBook Air 13″ (M1) compared with nearby Mac & Displays models
DeviceCSS viewportNativeDPRPPIDiagonal
MacBook Air 13″ (M1)1440 × 9002560 × 16002×22713.3″
MacBook Pro 13″ (M1)1440 × 9002560 × 16002×22713.3″
iMac 27″ 5K2560 × 14405120 × 28802×21827″
MacBook Pro 14″ (M1)1512 × 9823024 × 19642×25414.2″
MacBook Pro 16″ (2019)1792 × 11203072 × 19202×22616″
MacBook Pro 16″ (M1)1728 × 11173456 × 22342×25416.2″
iMac 24″ (M1)2240 × 12604480 × 25202×21823.5″
Pro Display XDR3008 × 16926016 × 33842×21832″
MacBook Pro 13″ (M2)1440 × 9002560 × 16002×22713.3″

Questions about the MacBook Air 13″ (M1) screen

What is the screen size of the MacBook Air 13″ (M1)?

The MacBook Air 13″ (M1) has a 13.3-inch display. In CSS the viewport measures 1440 × 900 px in portrait, and the panel itself has 2560 × 1600 physical pixels at 227 PPI.

What resolution should I design for on the MacBook Air 13″ (M1)?

Design at 1440 × 900 and export assets at 2×. That gives you 2560 × 1600 px images, which is exactly what the panel renders. Designing directly at 2560 × 1600 means every measurement is 2 times larger than the CSS values you will write.

What is the device pixel ratio of the MacBook Air 13″ (M1)?

The MacBook Air 13″ (M1) reports a device pixel ratio of 2. One CSS pixel therefore covers 4 device pixels. You can read it in JavaScript with window.devicePixelRatio.

Why does 1440 × 2 not equal 2560?

Because MacBook Air 13″ (M1) ships in a scaled display mode. macOS composites the desktop at 2880 × 1800 — twice the 1440 × 900 logical size — and resamples that frame down to the 2560 × 1600 panel. It is not the panel's native mode; it is the one Apple selects by default because 1440 px of workspace is the more useful number. Design against 1440 × 900 and export at 2×.

Which other devices have the same viewport as the MacBook Air 13″ (M1)?

3 other devices share the 1440 × 900 CSS viewport: MacBook Pro 13″ (M2), MacBook Pro 13″ (M1), MacBook Pro 15″ (2018). A layout that works on one works on all of them.

Related

All Mac & Displays sizesAll device screen sizes16:10 aspect ratioCSS breakpointsPPI calculator
Specifications from the manufacturer's published device data. Last verified 7 August 2026. CSS viewport values are the portrait window.innerWidth/innerHeight reported by the stock browser with no browser chrome. See methodology and sources.