Watch Sizing Guide

Watch Case Diameter

Case diamter is measured as the diameter perpendicular to the watch lugs, not counting the crown.

How to measure Watch case Size

Watch Case Diameter By Gender

Gender Diameter
mm cm in
Women’s Size 22 2.2 0.87
24 2.4 0.94
26 2.6 1.02
28 2.8 1.1
30 3 1.18
32 3.2 1.26
34 3.4 1.34
36 3.6 1.42
Men’s Size 38 3.8 1.5
40 4 1.57
42 4.2 1.65
44 4.4 1.73
46 4.6 1.81
48 4.8 1.89
50 5 1.97
52 5.2 2.05
54 5.4 2.13
56 5.6 2.20

Watch Case Diameter By Wrist Size

Wrist Circumference Proportional Case Diameter
in cm mm cm in
6 15.24 38 3.8 1.5
6.5 16.51 40 4.0 1.57
7 17.78 42 4.2 1.65
7.5 19.05 44 4.4 1.73
8 20.32 46 4.6 1.81

Watch Case Thickness

How to measure watch case thickness

Watch Case Thickness Chart

Case Thickness
mm cm in
6 0.06 0.24
8 0.08 0.31
10 0.1 0.39
12 1.2 0.47
15 1.5 0.59

Watch Band Width

Watch band width is measured between the lugs ends of the watch.

Watch Band Length Chart

Case Diameter Band Width
mm mm cm in
22 11 1.1 0.43
24 12 1.2 0.47
26 13 1.3 0.51
28 14 1.4 0.55
30 15 1.5 0.59
32 16 1.6 0.63
34 17 1.7 0.67
36 18 1.8 0.71
38 19 1.9 0.75
40 20 2.0 0.79
42 21 2.1 0.83
44 22 2.2 0.87
46 23 2.3 0.91
48 24 2.4 0.94
50 25 2.5 0.98
52 26 2.6 1.02
54 27 2.7 1.06
56 28 2.8 1.10

Watch Band Width Chart

Wrist Circumference Strap Length
in cm mm mm
6.0-6.5 15-16.4 150-164 120/70
6.6-7.0 16.5-17.8 165-178 125/75
7.1-7.5 17.9-19.0 179-190 130/80
7.6-8.0 19.1-20.3 191-203 135/80
8.1-8.5 20.4-21.6 204-216 140/85
8.6-9.0 21.7-22.9 217-229 145/90

How to Get A General Estimate

  1. Cut along the slip marked “A”
  2. Wrap the paper around your wrist with the wording faced outward.
  3. Note where the dotted line underneath the “A” and the
    measurement markers meet.
  4. Mark your final measurement with a pen.
How to get a general estimate