Watch Size Guide: Which Size Watch is Best for You?
A watch is the ultimate accessory, and as such, choosing a watch can be quite an ordeal. Notwithstanding complicated choices like functionalities, and movement, a huge part of making the right choice, is size. So how would one find the right-sized watch?
While most other factors depend on use-case and preferences, a disproportionate fit almost never works out. The common pitfall, especially for a first watch, arises from online purchases. While we always recommend buying at least your first couple of watches from a physical store, if you prefer an online purchase, do keep in mind the basics we’re discussing, and pay attention to the spec-sheet.
The most important “stat” when it comes to watch sizing is the case diameter, which is the measurement across the watch face, in millimeters, taken from one side of the case to the other, excluding the crown. The case diameter, with respect to one’s own wrist measurement, decides how big or “bold” the watch presents itself on the wrist.
How to Choose the Right Case Diameter
The “right” diameter is a tricky concept to define, because trends and standards keep changing, as do preferences. A watch size considered “too big” for a particular wrist once might now be considered bold or acceptably oversized. So a lot of this depends on personal preference. With that out of the way, lets look at a generic, or traditional size guide for varying wrist sizes:
- If your wrist size is under 6.5 inches, 36-40mm watches are usually considered the best fit.
- For intermediate wrist size, between 6.5 and 7.5 inches, 39mm-42mm watches would be ideal.
- For larger wrist sizes, above 7.5 inches, watches with case diameters measuring above 42mm would work well.
Moreover, it is important to note here that while Case Diameter is generally the more readily available measurement, especially when browsing online, the more important measurement, visually, is the lug-to-lug, i.e., the distance from the top lug to the bottom lug. 
The basic rule here, would be that the lug-to-lug should not exceed the flat width of one’s wrist.
Men’s and Women’s Watch Sizes
Most Men’s watches, considering the larger (average) wrist size, fall in the range of:
- 40mm to 44mm (most common)
- 38mm to 40mm (classic or dress watches)
- 45mm+ (sports, oversized, diver styles)
As opposed to Women’s watches, which generally can be classified into:
- 28mm to 34mm (most common)
- 35mm to 38mm (oversized women’s trend)
- 39mm+ (unisex and fashion-forward styles)
Case Thickness
Case thickness is the measurement from the back of the case to the top of the crystal, i.e., the height of the case. Thickness, along with other factors like materials, affects how heavy or bulky the watch feels on the wrist. While rugged or sports watches tend to be more bulky for protective features, chronographs and mechanical watches have extra bulk due to the complexity of their internal mechanisms. Dress watches and minimal quartz watches tend to be slimmer due to simpler mechanics as well as intended functionality.
A general classification could be:
- 6mm–9mm: Slim dress watches, very sleek
- 10mm–12mm: Comfortable daily wear range
- 13mm–15mm: Sport watches, chronographs, divers
- 16mm+: Heavy-duty divers and oversized models
There is also the matter of proportion. For example, a 44mm watch could comfortably carry a 13-15mm thickness, while the same would look too bulky on a 40mm watch.
In conclusion, the perfect watch size differs from person to person based on preferences, physical features and functional requirements, but a general sense of proportion goes a long way when it comes to the aesthetic of the watch, as an accessory. As always, it is always better to purchase a watch from a physical store, after seeing, wearing and getting a feel for the watch, but when online shopping is the way to go, we suggest keeping these basic tips in mind, to aid in making the ideal decision.
