Shop Watch Straps by Size
Find the right fit for your watch. Standard straps are sized by lug width — the distance between your watch lugs in millimeters. Apple Watch bands use case size instead. Pick a size below to explore straps across silicone, nylon, leather, canvas, and more. Not sure of your lug width? See our lug width sizing guide.
Standard Watch Straps
Sized by lug width in millimeters. Measure the space between the lugs where your strap attaches, or use our sizing guide.
Apple Watch Straps
Sized by Apple Watch case size, not lug width. Choose small (40/41/42 mm) or large (44/45/46/49 mm). Note: Series 1–3 42 mm uses the large size; Series 1–3 38 mm uses the small size.
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Choose by Convenience from Our Watch Straps Sizes
Choosing the right watch strap size is essential for both comfort and style.
Lug width: The distance between the two metal lugs where your strap attaches. It is measured in millimeters, and even a 1mm difference can affect fit.
The most common sizes are 18mm, 20mm, and 22mm, but vintage watches may require 16mm, while larger dive or sport watches often need 24mm. If you're replacing an Apple Watch band, match the band to your case size (40/41/42mm or 44/45/46/49mm) rather than lug width.
Archer Watch Straps offers quick-release straps in every standard size, making it easy to swap styles without tools.
How to Find the Size of Watch Strap to Get?
Measure the gap between your watch lugs with a ruler or caliper, or check the underside of your current strap for the width marking.
Still uncertain? Our customer service team is happy to help, and all orders include free returns and exchanges within 30 days.
Frequently Asked Questions
How do I measure my watch lug width to find the right strap size?
Use a caliper or ruler to measure the distance between the inside of your watch lugs in millimeters. This is your lug width. Common sizes are 18mm, 20mm, and 22mm. If you don't have a caliper, you can also check the back of your watch case or search your watch model online for specifications.
Visit our Sizing & Fitting page for a detailed measurement guide with illustrations.
What is the most common watch strap size?
20mm is the most common lug width for men's watches. 18mm is popular for mid-size and dress watches, while 22mm is common for sport watches and divers. For women's watches, 16mm and 18mm are the most frequently used sizes. Apple Watch straps are sized by case size rather than lug width.
What size Apple Watch strap do I need?
Apple Watch straps are sized by case size, not lug width. Choose straps for small cases (40/41/42 mm) if you have a Series 1–3 38mm, Series 4–10 40mm/41mm, or Ultra 42mm. Choose large case straps (44/45/46/49 mm) if you have a Series 1–3 42mm, Series 4–10 44mm/45mm/46mm, or Ultra 49mm.
Note: Series 1–3 42mm uses the large size; Series 1–3 38 mm uses the small size.
Can I use a strap that's 1mm smaller or larger than my lug width?
We recommend using the exact lug width for the best fit. A strap that's 1mm narrower may leave a small gap and look mismatched, while a strap that's 1mm wider typically won't fit between the lugs at all. Always measure carefully and choose the precise size for your watch.
What strap size should I choose for my diver watch?
Most diver and sport watches use 20mm or 22mm lug widths. Popular models like the Seiko SKX use 22mm, while many Omega Seamasters use 20mm. Check your watch's specifications or measure the lug width directly. Our 22mm collection includes quick release silicone and seat belt nylon options that pair perfectly with diver watches.
Do Archer quick release straps work with all watch brands?
Yes! Our quick release straps work with any watch that has standard spring bars and the matching lug width. The quick release mechanism lets you swap straps in seconds without tools. Just match your lug width (16mm, 18mm, 20mm, 22mm, or 24mm) and you're ready to go. For Apple Watch, use our dedicated Apple Watch strap collection.