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Ring Size Guide

Inside Diameter Inside Circumference Sizes
mm mm USA & Canada British & Australian
14.86 46.68 4 H 1/2
15.01 47.25 4 1/4 I
15.27 47.97 4 1/2 I 1/2
15.53 48.79 4 3/4 J 1/4
15.70 49.32 5 J 1/2
15.90 49.95 5 1/4 K 1/4
16.1 50.58 5 1/2 L
16.30 51.21 5 3/4 L 1/4
16.51 51.87 6 M
16.71 52.50 6 1/4 M 1/2
16.92 53.16 6 1/2 N
17.13 53.82 6 3/4 N 1/2
17.35 54.51 7 O
17.45 54.82 7 1/4 O 1/2
17.75 55.76 7 1/2 P
17.97 56.45 7 3/4 P 1/2
18.19 57.15 8 Q
18.35 57.65 8 1/4 Q 1/2
18.53 58.21 8 1/2 Q 3/4
18.69 58.72 8 3/4 R 1/4
18.89 59.34 9 R 3/4
19.22 60.38 9 1/4 S 1/4
19.41 60.98 9 1/2 S 3/4
19.62 61.64 9 3/4 T 1/4
19.84 62.33 10 T 1/2
20.02 62.89 10 1/4 U
20.20 63.46 10 1/2 U 1/2
20.44 64.21 10 3/4 V 1/4
20.68 64.97 11 V 1/2
20.85 65.50 11 1/4 W 1/4
21.08 66.22 11 1/2 W 3/4
21.24 66.73 11 3/4 X 1/4
21.49 67.51 12 Y
21.69 68.14 12 1/4 Y 1/2
21.89 68.77 12 1/2 Z
22.10 69.43 12 3/4 Z +1/2
22.33 70.15 13 Z+1
22.54 70.81 13 1/4 Z+1 1/2
22.60 71.00 13 1/2 Z+2
22.92 72.01 13 3/4 Z+2 1/2
23.16 72.76 14 Z+3
23.37 73.42 14 1/4 Z+3 1/2
23.55 73.98 14 1/2 Z+4
23.78 74.71 14 3/4 Z+4 1/2
24 75.4 15 Z+5
24.19 76 15 1/4 Z+5 1/2
24.41 76.69 15 1/2 Z+6
24.61 77.31 15 3/4 Z+6 1/2
24.83 78 16 Z+7


The Hands-On Way

Found the ring? Here’s a quick way to check your perfect fit:


How to measure your ring size result
  1. Prepare a small tool.
    Take a measuring tape, a piece of string, or a narrow strip of paper.
  2. Measure your finger.
    Wrap it gently around the finger you’ll wear the ring on.
  3. Get your measurement.
    Lay the string or paper flat and measure the distance to your mark with a ruler. Compare that number to the size chart above (or below) to find the nearest match.



Measure an Existing Ring

A simple method if you’re preparing a surprise or just checking your size at home:


How to measure your ring size result
  1. Pick the right ring.
    Choose one that fits comfortably on the finger you plan to wear your new ring on.
  2. Measure the inner diameter.
    Place the ring on a flat surface and measure its inside diameter in millimeters (mm).
  3. Compare with the chart.
    Match your measurement to the closest ring size using the guide above (or below).