Do it at home in minutes
Find your ring size — 3 easy steps.
1
Measure your finger
Pick whichever is easiest — both end with a number in millimeters that you'll use in Step 2.
Choose a method to begin ↓
2
Match your millimeters to a size
Find your measurement on the left, then read across to your US ring size.
Measured with a string? Use the Circumference column. Measured across a ring you own? Use the Diameter column.
3
Between two sizes? Size up.
A snug ring is easier to fix than a loose one that slips off.
Round up, with confidence.
If your measurement lands between two sizes, choose the larger one. If it isn't right, you have 30 days to exchange it, so there's no risk in rounding up.
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Still not sure? We'll mail you a free ring sizer. It arrives in a few days — measuring above is quicker, so this is just a fallback.
Order a free sizer →