Apple - MacBook Air 13 M4 vs Apple - MacBook Air 15 M4
Between the MacBook Air 13 M4 and MacBook Air 15 M4, the MacBook Air 13 M4 comes out ahead in weight, while the MacBook Air 15 M4 wins on storage and battery. Overall, the MacBook Air 13 M4 scores 52.8 and the MacBook Air 15 M4 scores 58.9 on our Mars Score.
Which should you buy?
The MacBook Air 15 M4 edges ahead on the Mars Score (52.8 vs 58.9), but the 6.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the MacBook Air 13 M4 if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight.
Pick the MacBook Air 15 M4 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are storage, battery, screen size.
Both ship with comparable ram, claimed battery life, refresh rate, so those specs don't separate the two — focus on the differences below.
Bottom line: the MacBook Air 15 M4 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Apple - MacBook Air 13 M4 wins
- ▲Weight — 0.27 kg less. 1.24 vs 1.51.
Why Apple - MacBook Air 15 M4 wins
- ▲Storage — 100.00% more. 512 GB vs 256 GB.
- ▲Battery — 24.53% more. 66 Wh vs 53 Wh.
- ▲Screen size — 12.50% more. 15.3 " vs 13.6 ".
Spec comparison
Design
| Spec | Apple - MacBook Air 13 M4 | Apple - MacBook Air 15 M4 |
|---|---|---|
| Weight | 1.24 kglead | 1.51 kg |
| Thickness | 11.3 mmlead | 11.5 mm |
| Build material | aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | Apple - MacBook Air 13 M4 | Apple - MacBook Air 15 M4 |
|---|---|---|
| Screen sizeⓘ | 13.6 " | 15.3 "lead |
| Refresh rateⓘ | 60 Hz | 60 Hz |
| Panel typeⓘ | IPS | IPS |
Performance
| Spec | Apple - MacBook Air 13 M4 | Apple - MacBook Air 15 M4 |
|---|---|---|
| CPU | Apple M4 | Apple M4 |
| CPU cores | 10 | 10 |
| GPUⓘ | Apple M4 10-core GPU | Apple M4 10-core GPU |
| RAMⓘ | 16 GB | 16 GB |
| Storageⓘ | 256 GB | 512 GBlead |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | Apple - MacBook Air 13 M4 | Apple - MacBook Air 15 M4 |
|---|---|---|
| Batteryⓘ | 53 Wh | 66 Whlead |
| Claimed battery life | 18 h | 18 h |
| USB-C ports | 2 | 2 |
| Thunderbolt portsⓘ | 2 | 2 |
| HDMI | false | false |
Frequently asked
Which has better battery life, MacBook Air 13 M4 or MacBook Air 15 M4?+
MacBook Air 15 M4 claims up to 18 hours — 18h vs 18h.
Which is lighter, MacBook Air 13 M4 or MacBook Air 15 M4?+
MacBook Air 13 M4 is lighter at 1.24 kg vs 1.51 kg.
Which has an OLED display, MacBook Air 13 M4 or MacBook Air 15 M4?+
Neither model has an OLED display.
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.