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MacBook Air (13-inch, M4, 2025) vs MacBook Air (15-inch, M4, 2025)

MacBook Air (13-inch, M4, 2025)1MacBook Air (15-inch, M4, 2025)2

Quick look

Quick look: MacBook Air M4 (13-inch) against MacBook Air M4 (15-inch)
FigureMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
Price£9993launch price£1,1993launch price
ChipM4chipM4chip
CPU10-coreCPU10-coreCPU
GPU8-coreGPU10-coreGPU
Memory16GBunified memory, base16GBunified memory, base
Storage256GBstorage, base256GBstorage, base
Battery lifeUp to18 hrsvideo playback, claimedUp to18 hrsvideo playback, claimed
Released12 March 20253ReleasedIn Apple Stores; pre-order from 5 March 2025.12 March 20253ReleasedIn Apple Stores; pre-order from 5 March 2025.
Security updatesNot available4Security updatesNot available4Security updates
Price
The MacBook Air M4 (13-inch) is £999 at launch, per Apple Newsroom (UK); the MacBook Air M4 (15-inch) is £1,199 at launch, per Apple Newsroom (UK).

True to scale

MacBook Air (13-inch, M4, 2025) · 304.1 × 215 mm footprintMacBook Air (15-inch, M4, 2025) · 340.4 × 237.6 mm footprint

Footprints from above, from Apple’s published dimensions, drawn to one scale and superposed. Corner rounding is our drawing convention, not a measurement.

Specifications

Each figure is from the source marked by its Mac’s name unless it carries its own small number, which links to where that figure was read.

Body

Body: Apple MacBook Air (13-inch, M4, 2025) against Apple MacBook Air (15-inch, M4, 2025)
SpecificationMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
Dimensions11.3 x 304.1 x 215 mm11.5 x 340.4 x 237.6 mm
Weight1.24 kg1.51 kg
ColoursSky Blue, Silver, Starlight, MidnightSky Blue, Silver, Starlight, Midnight
PortsTwo Thunderbolt 4 (USB-C) ports, MagSafe 3 charging port, 3.5mm headphone jackTwo Thunderbolt 4 (USB-C) ports, MagSafe 3 charging port, 3.5mm headphone jack
Thunderbolt ports22
Thunderbolt versionThunderbolt 4Thunderbolt 4
USB-A portsNo USB-A ports.5No USB-A ports.6
HDMINo HDMI port.7No HDMI port.8
SD card slotNo SD card slot.7No SD card slot.8
Headphone jackYesYes
MagSafeYesYes
KeyboardBacklit Magic Keyboard with Touch IDBacklit Magic Keyboard with Touch ID
Touch IDYesYes

Display

Display: Apple MacBook Air (13-inch, M4, 2025) against Apple MacBook Air (15-inch, M4, 2025)
SpecificationMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
Display size13.6 in15.3 in
Resolution2560 x 16642880 x 1864
Pixel density224 ppi224 ppi
Display typeLiquid Retina displayLiquid Retina display
Brightness500 nits500 nits
Wide colour (P3)YesYes
Nano-texture optionNo nano-texture display option.7No nano-texture display option.8

Chip and memory

Chip and memory: Apple MacBook Air (13-inch, M4, 2025) against Apple MacBook Air (15-inch, M4, 2025)
SpecificationMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
ChipApple M4 chipApple M4 chip
Apple siliconYesYes
CPU cores1010
Performance cores44
Efficiency cores66
GPU cores810
Neural Engine cores1616
Chip optionsM4 with 10-core CPU and 8-core GPU or 10-core GPUM4 with 10-core CPU and 10-core GPU
Memory (base)16GB16GB
Memory (maximum)32GB32GB
Memory options16GB, 24GB or 32GB16GB, 24GB or 32GB
Memory upgradeable by userNo, as Apple documents9No, as Apple documents9
Memory bandwidth120 GB/s120 GB/s
Storage (base)256GB256GB
Storage (maximum)2TB2TB
Storage options256GB, 512GB, 1TB or 2TB256GB, 512GB, 1TB or 2TB
Media engineHardware-accelerated H.264, HEVC, ProRes and ProRes RAWvideo decode enginevideo encode engineProRes encode and decode engineAV1 decodeHardware-accelerated H.264, HEVC, ProRes and ProRes RAWvideo decode enginevideo encode engineProRes encode and decode engineAV1 decode

Battery and power

Battery and power: Apple MacBook Air (13-inch, M4, 2025) against Apple MacBook Air (15-inch, M4, 2025)
SpecificationMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
Battery capacity53.8 Wh66.5 Wh
Rated charge cycles1,000 cycles101,000 cycles10
Video playback (claimed)18 h18 h
Wireless web (claimed)15 h15 h
Included power adapter30 W35 W
Fast chargingYesYes

Connectivity

Connectivity: Apple MacBook Air (13-inch, M4, 2025) against Apple MacBook Air (15-inch, M4, 2025)
SpecificationMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
Wi-FiWi‑Fi 6E (802.11ax)Wi‑Fi 6E (802.11ax)
Bluetooth5.35.3
EthernetNo Ethernet port.7No Ethernet port.8
External displays (base)22

Camera and audio

Camera and audio: Apple MacBook Air (13-inch, M4, 2025) against Apple MacBook Air (15-inch, M4, 2025)
SpecificationMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
Camera12MP Center Stage camera with support for Desk View12MP Center Stage camera with support for Desk View
Camera resolution12 MP12 MP
SpeakersFour-speaker sound systemSix-speaker sound system with force-cancelling woofers
MicrophonesThree-mic array with directional beamformingThree-mic array with directional beamforming

Platform

Platform: Apple MacBook Air (13-inch, M4, 2025) against Apple MacBook Air (15-inch, M4, 2025)
SpecificationMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
Newest macOSmacOS 27 Golden Gate11macOS 27 Golden Gate11
Model identifierMac16,1212Mac16,1312
Model year20252025

Benchmarks

Benchmarks: Apple MacBook Air (13-inch, M4, 2025) against Apple MacBook Air (15-inch, M4, 2025)
SpecificationMacBook Air M4 (13-inch)1MacBook Air M4 (15-inch)2
Geekbench 7 (CPU, single-core)3,206133,20713
Geekbench 7 (CPU, multi-core)15,0761315,06313
Geekbench 7 (Metal)47,6571352,69913

Sources

  1. Apple Support (UK) — MacBook Air (13-inch, M4, 2025) - Tech Specs · Default for MacBook Air M4 (13-inch) · Apple’s figure · read 14 Sep 2026

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  2. Apple Support (UK) — MacBook Air (15-inch, M4, 2025) - Tech Specs · Default for MacBook Air M4 (15-inch) · Apple’s figure · read 14 Sep 2026

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  3. Apple Newsroom (UK) — Apple introduces the new MacBook Air with the M4 chip and a sky blue colour · Apple’s figure · read 14 Sep 2026

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  4. Security updates: no end date published. Checked: endoflife.date. Read 22 Sep 2026

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  5. MacBook Air (13-inch, M4, 2025): No USB-A ports. Checked: Apple Support (UK) — MacBook Air (13-inch, M4, 2025) - Tech Specs. Read 14 Sep 2026

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  6. MacBook Air (15-inch, M4, 2025): No USB-A ports. Checked: Apple Support (UK) — MacBook Air (15-inch, M4, 2025) - Tech Specs. Read 14 Sep 2026

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  7. MacBook Air (13-inch, M4, 2025): No HDMI port. No SD card slot. No nano-texture display option. No Ethernet port. Checked: Apple Support (UK) — MacBook Air (13-inch, M4, 2025) - Tech Specs. Read 9 Oct 2026

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  8. MacBook Air (15-inch, M4, 2025): No HDMI port. No SD card slot. No nano-texture display option. No Ethernet port. Checked: Apple Support (UK) — MacBook Air (15-inch, M4, 2025) - Tech Specs. Read 9 Oct 2026

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  9. Apple Support (UK) — MacBook Pro: how to remove or install memory · Apple’s figure · read 18 Oct 2026

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  10. Apple Support (UK) — Determine battery cycle count for Mac laptops · Apple’s figure · read 15 Oct 2026

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  11. Apple Support (UK) — macOS 27 Golden Gate is compatible with these computers · Apple’s figure · read 22 Sep 2026

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  12. Apple Support (UK) — Identify your MacBook Air model · Apple’s figure · read 14 Sep 2026

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  13. Geekbench Browser (Primate Labs) · third-party figure · read 11 Oct 2026

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Not published by Apple

MacBook Air M4 (13-inch). Apple doesn’t publish for this Mac: refresh rate, storage upgradeable by user, the macOS it shipped with. Pages checked: Apple Support (UK) — MacBook Air (13-inch, M4, 2025) - Tech Specs; Apple Support (UK) — Identify your MacBook Air model; Apple Newsroom (UK) — Apple introduces the new MacBook Air with the M4 chip and a sky blue colour; Apple Support (UK) — macOS 27 Golden Gate is compatible with these computers, read 9 Oct 2026.

MacBook Air M4 (15-inch). Apple doesn’t publish for this Mac: refresh rate, storage upgradeable by user, the macOS it shipped with. Pages checked: Apple Support (UK) — MacBook Air (15-inch, M4, 2025) - Tech Specs; Apple Support (UK) — Identify your MacBook Air model; Apple Newsroom (UK) — Apple introduces the new MacBook Air with the M4 chip and a sky blue colour; Apple Support (UK) — macOS 27 Golden Gate is compatible with these computers, read 9 Oct 2026.

If you own one of them

Whether to move is a different question from which is better. Each Mac has a page on it: what its successor changes (the newest Mac in its line where Apple sells one, otherwise the Mac this site treats as its replacement, which can be in another line), what it fetches and whether it still gets updates. Should I upgrade my MacBook Air M4 (13-inch, 2025)? · Should I upgrade my MacBook Air M4 (15-inch, 2025)?

The pairs a buyer of either Mac would also weigh. Any two Macs in the catalogue can be compared from the chooser.