MacBook Air Dimensions: How Big Is a 13-Inch MacBook Air? (cm and inches)

Quick answer: The 13-inch MacBook Air (M2, M3 and M4 models) measures 30.41 x 21.5 x 1.13 cm (11.97 x 8.46 x 0.44 inches) and weighs 1.24 kg (2.7 lb). Its footprint is almost the same as a sheet of A4 paper – just 7 mm wider and 5 mm deeper. The 15-inch MacBook Air is 34.04 x 23.76 x 1.15 cm and weighs 1.51 kg.

Whether you are buying a laptop sleeve, choosing a bag, planning desk space or simply deciding between models, it helps to know exactly how big a MacBook Air is. This guide gives the official dimensions of each model, compares the Air with paper sizes, iPads and the MacBook Pro, and explains what fits it.

MacBook Air 13-inch dimensions explained

Since the 2022 redesign with the M2 chip, the 13-inch MacBook Air has used a flat, even-thickness body. The M3 (2024) and M4 (2025) models kept exactly the same size:

• Width: 30.41 cm (11.97 in) – about the length of a 12-inch ruler.
• Depth: 21.5 cm (8.46 in) – front edge to hinge.
• Thickness: 1.13 cm (0.44 in) when closed – about the same as 15 credit cards stacked.
• Weight: 1.24 kg (2.7 lb).

The older M1 MacBook Air (2020) has the same 30.41 cm width but is slightly shallower at 21.24 cm. It has a tapered wedge shape, from 1.61 cm thick at the back to 0.41 cm at the front, and weighs 1.29 kg.

When open, the lid adds roughly 20 cm of height above the desk. On a desk, allow about 32 cm of width and 25-30 cm of depth so there is room for your wrists.

MacBook Air vs other MacBooks

The 14-inch MacBook Pro is under 1 cm wider and deeper than the 13-inch Air, but 4.2 mm thicker and about 0.3-0.4 kg heavier. The 15-inch Air is about 3.6 cm wider than the 13-inch, roughly the width of two fingers on each side.

MacBook Air compared to everyday objects

• A4 paper: a sheet of A4 is 29.7 x 21.0 cm, so the Air is just 7 mm wider and 5 mm deeper. Lay a sheet on the closed laptop and it almost covers it.
• US Letter paper: a US Letter sheet is 27.9 x 21.6 cm, so the Air is about 2.5 cm wider and almost exactly the same depth.
• 12.9-inch iPad Pro: the 12.9-inch iPad Pro is 28.06 x 21.49 cm – the same depth as the Air but about 2.4 cm narrower, and much thinner at 6.4 mm. See how big an iPad Pro is.
• 11-inch iPad Pro: an 11-inch iPad Pro is about 24.8 cm tall, roughly 81% of the Air’s width.
• Ruler: the width of 30.41 cm is within 1 mm of a 12-inch ruler (30.48 cm). See how long 12 inches is.
• Vinyl record: a 12-inch LP is about 30 cm across, almost the same as the Air’s width.
• Thickness: at 1.13 cm, the closed Air is about as thick as a pencil lying flat (around 7-8 mm) plus a few millimetres, or a stack of 15 credit cards.

What size sleeve or bag does a MacBook Air need?

• Sleeves: look for a sleeve labelled for “13-inch MacBook Air” or “13-13.6 inch laptops”, with inside dimensions of about 31-32 x 22-23 cm. A 13-inch MacBook Pro sleeve from before 2021 also fits.
• Bags and backpacks: any laptop compartment rated for 13-inch or 14-inch laptops will fit the 13-inch Air. The 15-inch model needs a 15-inch or 16-inch compartment.
• Airline bags: the Air is small enough for almost any under-seat personal item bag.
• Screen protectors and cases: M1 and M2+ models have different shapes, so check that a hard shell case matches your exact model year.

Screen size and resolution

The 13-inch MacBook Air’s screen is actually 13.6 inches diagonally (34.5 cm) on M2 and later, with a resolution of 2560 x 1664 pixels. The M1 model has a 13.3-inch screen at 2560 x 1600. The 15-inch Air has a 15.3-inch, 2880 x 1864 screen. Like all laptops, the screen size is measured corner to corner and does not include the bezel.

MacBook Air 13-inch dimensions in every unit

Convert your own bag or desk measurements with the inches to cm converter.

Frequently asked questions

What are the dimensions of a 13-inch MacBook Air in cm?

30.41 x 21.5 x 1.13 cm for the M2, M3 and M4 models. The M1 model is 30.41 x 21.24 cm and 0.41-1.61 cm thick.

What are the dimensions of a MacBook Air in inches?

11.97 x 8.46 x 0.44 inches for the 13-inch M2-M4 models, and 13.40 x 9.35 x 0.45 inches for the 15-inch model.

How much does a MacBook Air weigh?

The 13-inch model weighs 1.24 kg (2.7 lb) and the 15-inch model weighs 1.51 kg (3.3 lb).

Is a MacBook Air the same size as A4 paper?

Almost. The 13-inch MacBook Air is just 7 mm wider and 5 mm deeper than an A4 sheet.

Will a 13-inch MacBook Air fit in a 14-inch laptop bag?

Yes. A 14-inch compartment is slightly larger, so the Air fits with a little room to spare.

Is the MacBook Air smaller than the MacBook Pro 14?

Yes. The 13-inch Air is about 0.9 cm narrower, 0.6 cm shallower, 4.2 mm thinner and around 0.3 kg lighter than the 14-inch MacBook Pro.

How big is the MacBook Air screen?

13.6 inches diagonally on the M2 and later 13-inch models, 13.3 inches on the M1, and 15.3 inches on the 15-inch model.