๐ Fashion & Sizing
Watch Size Calculator
Watch case diameter should stay close to a quarter of your wrist circumference, which is why a 44 millimetre diver looks oversized on a seven inch wrist and a 36 millimetre dress watch disappears on a nine inch one. Lug width then follows automatically, since straps are sold in even millimetres.
How it works
Wrist circumference
Measurement unit
Watch style
Case diameter
Comfortable range
Lug width
Typical thickness
Wrist circumference
Frequently asked questions
How do I use the Watch Size Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.