How to Measure Your Watch Strap for the Perfect Fit
Getting the right strap for your watch isn’t just about looks—it’s about achieving the perfect balance of comfort, functionality, and style. Whether you’re refreshing your favorite timepiece or replacing a worn-out strap, knowing how to measure the width and length of your custom watch strap accurately is key. Our comprehensive watch strap sizing guide will walk you through everything you need to know, from understanding lug width to calculating the ideal strap length, so you can confidently find a strap that fits perfectly and complements your unique preferences.
Measuring the width and length of your watch strap is essential to ensure a perfect fit and enhance the overall look of your timepiece. Here’s a detailed guide to measure accurately.
I. How to Measure Strap Width
What Does Strap Width Mean?
The "width" of a watch strap refers to the measurement of the strap at two key points:
-
Lug Width: a.k.a the band width size. This is the distance between the lugs of your watch case, where the strap connects to the watch. Lugs are the small protruding arms on either side of the watch case that hold the strap in place. Think of them as the attachment points that secure the strap to your watch. Lug width is measured in millimeters and is the first number in strap sizing (e.g., 20/16).
Understanding lug width is critical because it ensures your strap fits properly between the lugs, providing both stability and a seamless connection to the watch case.
-
Buckle Width: This is the width of the strap at the end where it attaches to the buckle. It’s the second number in strap sizing (e.g., 20/16).
For example, a strap size of 20/16 means it is 20mm wide at the lugs and tapers down to 16mm at the buckle. This tapering not only enhances the strap’s aesthetic. A dressier strap would benefit from being more tapered, while a less tapered design would create a more rugged look.

Accurately measuring the width of your strap is the foundation of finding the right fit for your watch. Below are the tools and methods to take precise measurements:
-
Calipers (Most Accurate): Use a digital or manual caliper to measure the width in
millimeters. Place the caliper’s jaws on the lug or strap end and note the measurement. -
Ruler (Quick & Easy): Don’t have calipers? A standard ruler with millimeter markings works too. Align the ruler with the lug or strap end and count the millimeters.
-
Specialized Lug Width Gauge: This affordable tool ensures precise measurements, making strap sizing effortless for watch enthusiasts.
Make sure to measure inside the lugs (the gap where the strap attaches to the watch) for the first number, and the buckle end of the strap for the second number.
II. How to Measure Strap Length
Once you’ve nailed down the width, it’s time to focus on length—a measurement just as crucial for a great fit.
What Does Strap Length Mean?
Before we begin, it’s important to understand that strap length measurements exclude the buckle. This means that when you see numbers like 11.5/7.5, they only refer to the lengths of the two strap pieces (the long and short ends) and do not account for the buckle itself. This distinction is essential because the buckle can add a few extra millimeters, which may slightly affect how the strap fits on your wrist.
Strap length, measured in centimeters (cm), determines how comfortably the strap wraps around your wrist and how proportionally it aligns with the watch. Getting the right length ensures a secure and visually balanced fit.
Strap length is expressed as two numbers (e.g., 11.5/7.5), which sum up the total length of the strap but also account for its two halves:
-
The Long Tail (Holes Side): The part of the strap with the holes for adjustment.
-
The Short Tail (Buckle Side): The part of the strap that holds the buckle.

Guide to Measuring Strap Length
Follow these steps to accurately measure your strap length or determine the ideal size for your wrist:
-
Measure an existing strap:
-
Lay the strap flat on a surface.
-
Use a ruler or measuring tape to measure the long end (from the base of the lug to the last hole). Note the measurement in centimeters (cm).
-
Measure the short end (from the base of the lug to the end of the buckle).
-
Add these two values together to get the total length.
-
Determine strap length for your wrist:
-
Measure your wrist circumference. Wrap a measuring tape (or a piece of string if you don’t have one) snugly around your wrist. Lay the string flat to measure it accurately. Record the measurement in centimeters.
-
Refer to the size chart below to find a strap length that matches your wrist size.
Two-Piece Watch Strap Size Chart
Wrist Size (in) | Wrist Size (cm) | Strap Length Holes Size / Buckles Side |
5 | 12.7 | 9.5 / 5.5 |
5.5 | 14 | 10 / 6 |
5.6 - 5.9 | 14.2 - 15 | 10.5 / 10.6 |
6 - 6.4 | 15.2 - 16.2 | 10.5 / 7 (Short) |
6.5 - 6.9 | 16.5 - 17.5 | 11.5 / 7.5 (Regular) |
7 - 7.4 | 17.8 - 18.8 | 11.5 / 8 |
7.5 | 19 | 12 / 8 |
8 | 20.3 | 12.5 / 8.5 |
8.5 | 21.6 | 13 / 9 |
9 | 22.9 | 13.5 / 9.5 |
NATO Watch Strap Size Guide
Wrist Size (in) | Wrist Size (cm) | Strap Length (cm) |
5 - 6 | 12.7 - 15.2 | 23.5 |
6 -7 | 15.2 - 17.8 | 26 (Standard) |
7 -8 | 17.8 - 20.3 | 28.5 |
8 - 9 | 20.3 - 22.9 | 31 |
Note: While the chart serves as a helpful guide and fits most wrist sizes, these are standard measurements and may not guarantee a perfect fit for everyone.
Frequently Asked Questions
Q: What if my strap size falls between two options?
A: If you're deciding between two sizes, pick the larger size for a longer tail that tucks into the loop, or choose the smaller size for a shorter tail that offers a more tailored and proportional look.
Q: Can I use the same strap for different watches?
A: Yes, 99% of the time, you can use the same strap for different watches. Just ensure the lug width matches your watch for a proper fit. However, curved-end straps are an exception, as they are designed for specific cases and might not work with all watches. You can learn more about curved-end watch straps here. With the right fit, swapping straps is an easy way to refresh your watch’s style.
Enhance Your Timepiece Today
Now that you know how to find the perfect strap size, explore our collection to discover a wide range of premium straps tailored to suit every style and need. With designs that combine comfort, durability, and elegance, you’re sure to find the ideal match for your watch.
Here’s how to place your order in just a few simple steps:
-
Browse Our Collection
Visit our strap collection and select the strap that catches your eye. You can explore the various styles, sizes, and materials available, all customizable to your preferences, except for nylon NATO-style and FKM rubber straps. Use filters to narrow down options and find your perfect match. -
Select the appropriate width for your watch. You can always refer back to our detailed size guide.
-
Choose the desired length
Click on the strap you love. On the product page, choose the length.
-
Customize your strap
Select from additional options from tip shapes to custom buckles.
If you’re uncertain about customization options, simply refer to our quick guide for clear and detailed instructions.
Note: If you opt out of customization, the strap will default to the design and specifications shown on the product page. -
Complete Your Order
Review your details carefully and select "Add to Cart" to checkout.
Each bespoke watch strap is crafted with premium materials and expert precision to enhance your timepiece. Order your custom watch strap today and experience Veblenist’s renowned craftsmanship, with free shipping included.