◷ STRAP INDEX

About Strap Index

Strap Index is a free database of watch strap sizes. Look up any watch to get its exact lug width, spring-bar size, and the strap styles that actually fit — before you spend money on the wrong one.

Buying a strap should be simple, but manufacturers bury lug widths in spec sheets and PDFs, and the odd sizes (19mm, 21mm) trip people up constantly. We put the answer front and centre for every model.

What you'll find here

How we check sizes

Lug width is the field that decides whether a strap fits, so it gets the most scrutiny. We use the manufacturer's own specification where one is published. Where it isn't, we cross-check dealer spec sheets, reference databases and strap makers' fitting notes, and we prefer figures that several independent sources agree on. Pages we've checked this way list their sources and the date, in a “Sources & corrections” box.

Secondary specs (case size, lug-to-lug, thickness, spring bar diameter) are widely published reference values. They can vary by a few tenths between sources and between references in the same family, so confirm your exact reference before buying, especially for watches made in several case sizes.

Corrections log

When we get something wrong, we fix it everywhere it appears and say so here and on the page itself.

Corrections and requests

Spotted a wrong figure, or want a watch added? Get in touch with the model and reference number. Corrections and requests shape what we update next.

How we make money

When you buy a strap through one of our links, we may earn a small commission at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. We also show ads served by Google — see our privacy policy. That's what keeps the database free.