Watch Case Size Guide

Modern tastes have gravitated towards watch styles with a larger case. For women, a standard small watch case measures 26-29mm and mini watches are typically 23-25mm in diameter. For men, the average watch case is 37-39mm, a sports watch case is 40-42mm and over-sized watches measure 45mm and up. Some wearers will argue the case sizes have grown too big—others love the weight and impressive size of an over-sized watch case.

Ultimately the “correct” size comes down to personal preference and which size feels most comfortable.

Women's average watch case size: 36-38mm
Men's average watch case size: 38-44mm

The most common watch sizes for classic, everyday watches range from 42mm to 46mm. These sizes are just generous enough to make a stylish statement without being too bold or over-sized. Most often, sport watches range from 40mm to oversized 54mm. 

Use this guide to help you get an idea of how your watch will look on your wrist. Watch Case Size Guide ← (click to open in a new window) You can download the picture, print at normal size, cut out your desired case size and place it around your wrist.

Watch and wrist size for men – inches & cm
Wrist circumference Watch size cm
              Small      Medium   Big
15 cm   32 mm    37 mm     41 mm
16 cm   34 mm    39 mm     43 mm
17 cm   36 mm    41 mm     45 mm
18 cm   36 mm    42 mm     45 mm
19 cm   37 mm    43 mm     46 mm
20 cm   38 mm    44 mm     47 mm
21 cm   39 mm    44 mm     47 mm
22 cm   40 mm    45 mm     48 mm
23 cm   41 mm    45 mm     48 mm
24 cm   42 mm    46 mm     49 mm

Wrist circumference Watch size inch
                   Small       Medium  Big
5.9 inch    32 mm     37 mm     41 mm
6.3 inch    34 mm     39 mm     43 mm
6.7 inch    36 mm     41 mm     45 mm
7.1 inch    36 mm     42 mm     45 mm
7.5 inch    37 mm     43 mm     46 mm
7.9 inch    38 mm     44 mm     47 mm
8.3 inch    39 mm     44 mm     47 mm
8.7 inch    40 mm     45 mm     48 mm
9.1 inch    41 mm     45 mm     48 mm
9.5 inch    42 mm     46 mm     49 mm

Watch and wrist size for women – inches & cm
Wrist circumference Watch size cm
               Small       Medium    Big
12 cm    21 mm     27 mm      34 mm
13 cm    22 mm     27 mm      34 mm
14 cm    23 mm     28 mm      35 mm
15 cm    24 mm     29 mm      36 mm
16 cm    25 mm     30 mm      37 mm
17 cm    26 mm     31 mm      38 mm
18 cm    27 mm     32 mm      39 mm
19 cm    28 mm     33 mm      40 mm
20 cm    29 mm     34 mm      41 mm
21 cm    30 mm     35 mm      41 mm
22 cm    31 mm     36 mm      42 mm
23 cm    32 mm     37 mm      43 mm
24 cm    33 mm     38 mm      44 mm

Wrist circumference Watch size inch
                   Small         Medium    Big
4.7 inch    21 mm     27 mm      34 mm
5.1 inch    22 mm     27 mm      34 mm
5.5 inch    23 mm     28 mm      35 mm
5.9 inch    24 mm     29 mm      36 mm
6.3 inch    25 mm     30 mm      37 mm
6.7 inch    26 mm     31 mm      38 mm
7.1 inch    27 mm     32 mm      39 mm
7.5 inch    28 mm     33 mm      40 mm
7.9 inch    29 mm     34 mm      41 mm
8.3 inch    30 mm     35 mm      41 mm
8.7 inch    31 mm     36 mm      42 mm
9.1 inch    32 mm     37 mm      43 mm
9.5 inch    33 mm     38 mm      44 mm

Of course this is not a hard rule, because sometimes a large or a small watch is trending. So the most important thing is that you like the watch and that it matches the wearing comfort and your preference.

Water Resistance Watches Guide

This guide explains the terminology with water resistant watches.


Water Resistance:

Can withstand accidental splashes for example rain, but it’s not suitable to be submerged into water, not suitable for shower.


3 BAR / 3 ATM / 30m / 100ft:

Can withstand accidental splashes. You can also keep it during shower but we recommend you do so only if the watch is new or has been recently resealed. This is because the watch water resistance seal may degrade over time, especially if it takes a knock.


5 BAR / 5 ATM / 50m / 165ft:

Can withstand splashes, shower and is suitable for swimming. It is not suitable for water sports, pool-side diving or sea diving.


10 BAR / 10 ATM / 100m / 330ft:

Is suitable for swimming, snorkelling but not suitable for high board diving or aqua diving.


20 BAR / 20 ATM / 200m / 660ft:

Is suitable for swimming, high-impact water sports and scuba diving.


More than 30 BAR / 30 ATM / 300m / 990ft:

Suitable for all high-impact water sports, scuba-diving and saturation diving.