Ring sizing guides
Short, practical guides on getting ring size right. Why fingers swell and shrink, the average sizes for men and women, which rings a jeweler can resize, and how US, UK, and EU sizes compare.
Why size changes
Fingers swell and shrink with heat, salt, and the clock. Here is how much, and when to measure.
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Resizing basics
Tungsten and full eternity bands often cannot be resized. See what can change, and by how much.
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Average sizes
About a 6 to 7 for women and a 9 to 10 for men. A starting guess, plus how to confirm it.
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Sizes by country
US numbers, UK letters, EU millimeters. Why they differ, and how to convert between them.
Read the guideReady to measure?
Skip the guesswork. The free sizer prints to true scale, with a ruler and a card check on the sheet so the number you read is the number you order.