Where to find Apple Watch band sizes

Apple provides the following PDF that you can print out to find out what size Apple Watch band would work best for you: https://www.apple.com/shop/Catalog/US/Images/bxxd/size-guide_CA.pdf

Note: You can match most bands with any Apple Watch Series 3 or later case of the same size.

• 40mm, 41mm, and 42mm bands are all compatible with 40mm, 41mm, 42mm case sizes.
• 44mm, 45mm, 46mm, and 49mm bands are all compatible with 44mm, 45mm, 46mm, and 49mm case sizes.

In addition, you may the following graphic helpful:

if you go to a band on their site 40mm Neon Yellow Sport Band - S/M - Apple

all pages include a size guide

"Works with most versions of Apple Watch.

See compatibility details "