I see posted straps saying 18mm, 22mm and others. How do I figure out what width my watch strap has? I only have a digital caliper that has thousandths of an inch?

Hi Bill Every thousanth of an inch equals 0.0254mm

inch mm
0.001 = 0.0254

Thank You Mel. That makes it easy enough for me.

Pete Great Link thank you. Played with the calculators a bit.