To learn how to know your watch band size, you need to measure the circumference of your wrist and then consider both the style of the band and the fit you want. There are different ways and tools to obtain this measurement accurately, which is essential to ensure the comfort and aesthetics of your watch. This process is especially important if you plan to replace the original strap with a new one or if you are purchasing a watch as a gift.
How to tell the size of a watch strap by measuring your wrist
The first step in determining how to know your watch band size is to measure your wrist. You can do this with a flexible tape measure (such as those used in sewing). If you don't have one, use a string or thread, wrap it around your wrist, mark it and then measure it with a ruler.
Place the strap just above the wrist bone where you normally wear your watch.
Measure loosely, but not too loosely either.
Record the measurement in millimetres or centimetres, as indicated by the shop where you buy the strap.
How to know the size of a watch strap according to the desired style
Once you have your wrist measurement, you need to decide what type of fit you prefer:
Close-fitting: subtract 1 cm from your wrist measurement.
Loose fit: adds between 1 cm and 1.5 cm.
Classic fit: uses the size as it is, without adding or subtracting, ideal for those seeking a balance between comfort and firmness.
Types of straps and their impact on size
The type of leash directly influences the size, as not all leashes offer the same flexibility:
Leather or rubber straps: usually have multiple holes for adjustment. Size is measured by adding the lengths of both halves, excluding the buckle.
Metal straps (stainless steel, titanium): adjustable by adding or removing links. They usually require specific tools or the help of a watchmaker.
NATO and Zulu straps: made of nylon, they are highly adjustable and generally universal in size, ideal for sports or military watches.
Straps with folding clasp (butterfly clasp): offer a more uniform and professional fit, but have less scope for modification than a standard buckle.
Belt width also matters
In addition to the length, you need to know the width of the watch hands (lug width). This is the distance between the two “legs” where the strap is attached to the watch case.
Common sizes are 18 mm, 20 mm, 22 mm and 24 mm.
You can measure this space with a ruler or caliper.
Make sure the new strap is compatible, as a wider strap will not fit, and a narrower strap will move or look disproportionate.
Check the size of your current strap
If you have already learned how to know the size of a watch strap, and you have a strap that fits you:
Measure its full length (not including the buckle).
If it is made of leather, it may have the size printed on the back (e.g. “115/75”).
You can also check the original documentation of the watch or search for the model on the manufacturer's official website.
Practical advice
If you are between two sizes, go for the longer one and make a new hole in it if it is made of leather.
Smaller wrists may require XS or female straps.
For a professional adjustment and to avoid mistakes, visit a watchmaker or consult with specialists such as those at Gordillo Jewellery, They offer personalised advice and high quality original products.
Additional resources and tools
Online size guides: Many websites offer size calculators where you enter your wrist measurement and the style of the strap, such as WatchGecko o Hodinkee.
Professional watchmakers: If you have a high-end watch such as Omega or Rolex, it is ideal to have the adjustments done by an authorised specialist so as not to compromise the integrity of the watch.
Conclusion: Find the perfect fit
Knowing how to choose the right size of watch strap is key to getting the most out of your piece. It's not just about comfort, but also about style and functionality. Measure accurately, consider the type of strap and don't hesitate to ask for professional help if you need it.
