How to Measure Laptop Size for a Sleeve: Complete Guide

Laptop sleeves are one of the most purchased accessories in the global tech and travel market—but surprisingly, one of the most returned items as well. Why? Because many buyers rely solely on the screen size advertised by laptop brands—13”, 14”, 15.6”—and assume the sleeve size must match it. In reality, the diagonal screen measurement does not reflect the laptop’s true physical size, and this misunderstanding results in sleeves that are too tight, too loose, or simply impractical. Whether you’re a shopper, a business traveler, a student, or a brand planning an OEM sleeve project, knowing how to measure your laptop correctly is essential.