When choosing to buy a watch like a mechanical watch or a quartz watch, you need to filter out many factors to choose the watch that suits you best. In this article, I will guide you how to measure the watch face size to choose the best one.

The first factor that creates the balance of the watch with the hand is the watch diameter. This size measurement usually divided into 2 objects male and female. Normally, you would measure your wrist's circumference first, then choose the right watch face size.
Step 1: Measure wrist circumference
- You use the tape measure and place the hand on the watch, then measure as shown.

Step 2: Calculate the size of the watch face suitable for the wrist circumference
- Recipe:
+ Wrist circumference / 4.5 = optimal watch size.
+ Wrist circumference / 4 = maximum watch size.
+ Wrist circumference / 5 = minimum watch size.

- Popular clock face sizes:
+ Small female wrists: 23mm - 25mm
Average female wrist: 26mm - 29mm
Large female wrists: 34mm - 36mm
+ Small men's wrists: 37mm - 39mm
+ Men's wrists fit: 40mm - 42mm
Big men's wrists:> 45mm

- For men, it is from about 34 mm - 50 mm, and for women, it is 23 mm - 44 mm. Sometimes there are girls with big wrists while men have small wrists, so they will share a size called Midsize (medium size, big for women but small for men).
 
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So, I have introduced to you how to measure watch face size to choose the best one. Wish you find the right watch!