When placed side by side, the MacBook Air 13" (M4) and MacBook Air 15" (M3) reveal a clear story. In terms of height, the MacBook Air 13" (M4) stands at 215.0 mm while the MacBook Air 15" (M3) measures 237.6 mm. The MacBook Air 15" (M3) is 22.6 mm taller. Looking at width, the MacBook Air 13" (M4) is 304.1 mm across versus the MacBook Air 15" (M3)'s 340.4 mm. The MacBook Air 15" (M3) is 36.3 mm wider. For thickness, the MacBook Air 13" (M4) comes in at 11.3 mm compared to the MacBook Air 15" (M3)'s 11.5 mm. The MacBook Air 15" (M3) is 0.2 mm thicker.
Both the MacBook Air 13" (M4) and MacBook Air 15" (M3) weigh exactly 1260 grams, so there is no weight difference between them.
| Metric | MacBook Air 13" (M4) | MacBook Air 15" (M3) | Diff |
|---|---|---|---|
| Width | 304.1 mm | 340.4 mm | -36.3 mm |
| Height | 215.0 mm | 237.6 mm | -22.6 mm |
| Depth | 11.3 mm | 11.5 mm | -0.2 mm |
| Weight | 1.26 kg | 1.26 kg | 0.0 mm |