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Watch Band Size Guide

2 piece watch bands are measured by the width of the strap end that attaches to your watch. The strap width is always measured in millimeters (mm).

Determine Strap Width

Check Your Old Strap:

Size marking printed on the inside of a watch strap

Check the inside of your current strap to see if the size is clearly indicated. If the size is identified, and the strap fits well, you can simply purchase the same size.

Measure Lug Width:

Caliper measuring the distance between a watch's lugs

Measure the distance between the watch lugs in millimeters (mm). Make sure you measure from the inside of the lugs as shown in the example. It is better to measure the distance between the watch lugs than the actual strap width as this will give you a more precise measurement.

Don't Have a Ruler? Download our Printable Ruler (PDF)

Determine Strap Length

If you have an average size wrist, it's likely safe to purchase a standard length strap that isn't described as being extra-long or extra short. If you have a large or small size wrist, you may need to select an extra-long or extra short strap. Either way, taking a few minutes to identify the proper length can save you the disappointment of purchasing the wrong size.

Measure Your Old Strap:

Tape measure laid along the length of a watch strap

Measure the length of both straps together in millimeters (mm). You can also measure each one separately and add them up to get the total strap length. Do not include the buckle in your strap length measurement. If your current strap is a suitable length, you should purchase a strap of the same or similar length. If your current strap is too long or too short, then try to select a model that is longer or shorter. Strap lengths are always measured without the buckle.

Measure Your Wrist:

Tape measure wrapped around a wrist to determine wrist size

You can measure the length around your wrist using seamstress tape or the printable ruler provided in the link above.

Keep in mind that you will need to factor in the width of your watch case when determining the total strap length needed.

You should also remember that two piece straps can be adjusted smaller when buckled so it is okay if the strap length is somewhat longer than needed.

Diagram showing where to measure strap length across a watch and band

Size Guide

Shop by Size

Need Help Figuring Out Your Watch Strap Size?

View Video Transcript & Dialogue

Need help figuring out your watch strap size? There’s a few different ways to figure out your strap size.

First, check the back of your strap and see if it has the size on it. If it’s a leather strap, there’s a good chance it will show the size. If it’s metal, it probably won’t.

The most common strap size is 20mm or somewhere between 16 to 24mm. So if you see a number between 16 and 24 on the back of your strap, that’s probably the strap size.

Some straps might show two numbers on it. For example, 20 slash 18. The strap size would refer to the first number and the second number would be the buckle size.

If your old strap doesn’t have the size written on it, then you’ll need to measure the width of the inside of your watch lugs. For this, you’ll need a ruler that has the millimeters on it. If you don’t have a ruler, you can download and print our digital ruler and use that.

Please don’t measure in inches and try to convert to millimeters. It just never works out. You really have to measure precisely in millimeters to get the correct measurement.

Now, it’s time to upgrade your watch with the new strap.

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