Find your size.
It matters more than you think
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Ring sizing is one of those things people feel weirdly confident about until they order the wrong size. Here's how to get it right, even if you don't own a ring mandrel and don't plan to.
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Option 1 — The string trick
Wrap a thin strip of paper or a piece of string around the base of your finger (where the ring will actually sit — usually not the very bottom, more like the middle-ish). Mark where it overlaps. Measure that length in millimetres. That's your circumference (= EU size). Find it in the table below.
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Timing note
Fingers swell. They're smaller in the morning and in the cold, bigger in the evening and after coffee. I'd measure in the afternoon, when your finger is at its regular daytime self.
Option 2 — Measure a ring you already own
Take a ring that fits you well. Measure the inside diameter — the straight line across the inside of the band. Find it below.
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Sizes:
EU — — — diameter — — — US
(=circumference in mm)
EU 46 — — — 14.6 mm — — — US 3½
EU 48 — — — 15.3 mm — — — US 4½
EU 50 — — — 15.9 mm — — — US 5½
EU 52 — — — 16.6 mm — — — US 6
EU 54 — — — 17.2 mm — — — US 7
EU 56 — — — 17.8 mm — — — US 7¾
EU 58 — — — 18.5 mm — — — US 8½
EU 60 — — — 19.1 mm — — — US 9½
EU 62 — — — 19.7 mm — — — US 10¼
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Fitting note:
The bands are irregular and mostly oval, which means you rotate them to slide over the knuckle. Once on, they sit comfortably at the base of the finger. Measure the base of your finger, not the knuckle, and order your usual size.
Not sure?
Write to me.
I've helped people figure this out over email more times than I can count.