How do I know what size watch strap I need?

Are you looking for a new watch strap but aren’t sure what size is right for your watch? Don’t worry — this is one of the most common questions asked by people looking to replace their watch strap. In this article, we explain how to find out the size of your watch strap, with a simple and straightforward guide, so you can choose the ideal option with confidence.

What does the strap size mean?

When we talk about the size of a watch strap, we’re referring to the width of the strap in the area that fits between the watch lugs. This measurement is always given in millimetres (mm).

It is this measurement that determines whether the watch strap will fit correctly on the case of your model.

Examples of common sizes:

• 18 mm

• 20 mm

• 22 mm

These are standard sizes for most universal straps and replacement straps available in our shop.

How to measure your watch strap size?

Knowing how to measure your watch strap is essential to ensure a perfect fit. Here’s how you can do it at home:

1. Remove the old strap

If it is still attached, remove the strap using a strap-changing tool or a small precision screwdriver.

2. Locate the lugs

The lugs are the two small metal arms protruding from the watch case. The distance between them is what you need to measure.

3. Use a ruler or a calliper

Place the ruler or calliper between the lugs and measure the internal width — do not measure the outside of the lugs. Make sure you are measuring in millimetres (mm).

4. Record the measurement

Now you know the size of your watch strap! You can search for that size directly on our website and see all the available options.

Can’t measure it?

No problem! Here are two practical alternatives:

• Check if the measurement is engraved on your old strap — usually on the inside (the part that touches your wrist). Look for a number such as “18”, “20” or “22” — this number indicates the width, in millimetres, of the section that fits between the watch lugs.

• Send us photos of your watch and we’ll help you find the right strap size.

What are the most common sizes?

The most common sizes for watch straps are: 18mm, 20mm and 22mm. But we also have less common options such as: 19mm and 21mm.

NorteSpring offers universal straps in various sizes — for both newer watches and vintage models.

Still unsure about the strap size?

If you’re still unsure, don’t hesitate to ask for help. Our team is here to answer any questions and show you, in simple terms, how to find out the size of your watch strap, even if you can’t measure it directly.

Simply send us the brand and model of your watch — and we’ll get back to you with the right suggestion.

👉 Contact us if you have any questions.