When placed side by side, the MacBook Air 15" (M3) and Apple Watch Ultra 3 reveal a clear story. In terms of height, the MacBook Air 15" (M3) stands at 237.6 mm while the Apple Watch Ultra 3 measures 49.0 mm. The MacBook Air 15" (M3) is 188.6 mm taller. Looking at width, the MacBook Air 15" (M3) is 340.4 mm across versus the Apple Watch Ultra 3's 44.0 mm. The MacBook Air 15" (M3) is 296.4 mm wider. For thickness, the MacBook Air 15" (M3) comes in at 11.5 mm compared to the Apple Watch Ultra 3's 14.4 mm. The Apple Watch Ultra 3 is 2.9 mm thicker.
The MacBook Air 15" (M3) is heavier at 1260 grams versus 61.4 grams for the Apple Watch Ultra 3. That is a 1198.6-gram difference (1952.1%). While this may seem small, you can feel a noticeable difference during extended use.
| Metric | MacBook Air 15" (M3) | Apple Watch Ultra 3 | Diff |
|---|---|---|---|
| Width | 340.4 mm | 44.0 mm | +296.4 mm |
| Height | 237.6 mm | 49.0 mm | +188.6 mm |
| Depth | 11.5 mm | 14.4 mm | -2.9 mm |
| Weight | 1.26 kg | 61.4 g | +1198.6 mm |