How to measure the diameter of a watch for a perfect fit

If you're browsing for a new timepiece, you've probably realized that knowing how to measure the diameter of a watch is the only way to avoid a return later on. There is nothing more disappointing than unboxing a beautiful piece only to find it looks like a dinner plate on your wrist—or conversely, so small it looks like it belongs to someone half your size. It's one of those things that seems simple enough until you're holding a ruler and wondering if you should include the little knob on the side or not. (Spoiler alert: you shouldn't). ...

February 7, 2026 · 7 min · Heather Lobello