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Jewelry Size Guide

Find your perfect fit with our comprehensive sizing guides for rings, earrings, necklaces, and bracelets

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Ring Size Conversion Chart
Click on a size to highlight it across all sizing systems
US SizeUK SizeEU SizeDiameter (mm)
3F4414.1
3.5G4514.5
4H4614.9
4.5I4715.3
5J4915.7
5.5K5116.1
6L5116.5
6.5M5216.9
7N5417.3
7.5O5517.7
8P5718.2
8.5Q5818.6
9R5919.0
9.5S6019.4
10T6219.8
10.5U6320.2
11V6420.6
11.5W6621.0
12X6721.4
How to Measure Your Ring Size
Two accurate methods to find your perfect fit

1Measure an Existing Ring

Best method for accuracy:

  1. Find a ring that fits the intended finger comfortably
  2. Place the ring on a ruler and measure the inside diameter
  3. Measure in millimeters for best accuracy
  4. Match the diameter to our size chart above

Quick Reference:

  • 16.5mm diameter = US Size 6
  • 17.3mm diameter = US Size 7
  • 18.2mm diameter = US Size 8

2Measure Your Finger

If you don't have an existing ring:

  1. Cut a strip of paper or string about 6 inches long and 1/4 inch wide
  2. Wrap it around the base of your finger (not too tight, not too loose)
  3. Mark where the paper/string overlaps with a pen
  4. Measure the length in millimeters with a ruler
  5. Divide by 3.14 to get the diameter
  6. Match the diameter to our size chart
Ring Sizing Tips
Important considerations for the perfect fit
  • Measure at the end of the day: Fingers are slightly larger in the evening due to heat and activity
  • Temperature matters: Cold fingers are smaller, warm fingers are larger. Measure at room temperature
  • Consider ring width: Wider bands (5mm+) may need a half size larger for comfort
  • Measure multiple times: Take 3-4 measurements at different times and use the average
  • Different fingers, different sizes: Don't assume all fingers are the same size
  • Between sizes? Choose the larger size for comfort, especially for everyday wear

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Remember: We offer free resizing within 30 days of purchase!