Ring Size Guide

Not sure about your ring size? We we have prepared illustrated step-by-step instructions to help you measure your ring size accurately. Check them below:
Ring Size Guide

Method 1

Determine Your Ring Size Using Your Own Ring

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Method 2

Determine Your Ring Size Using Paper or String

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Engagement ring advice for men

You want her to feel extra special on this big day, but also you want to avoid disappointment when the ring doesn't fit. Read our tips on how to measure her ring size without spoiling the surprise! Read more >>

Conversion chart for ring sizes

Inside diameter Inside circumference Sizes
(in) (mm) (in) (mm) United States
and Canada		 United Kingdom,
Ireland,
Australia and
New Zealand		 India,
China,
Japan,
South America		 Italy,
Spain,
Netherlands,
Switzerland
0.57 14.48 1.79 45.5 3½ G   5.5
0.578 14.68 1.82 46.1 3¾ G½ 6 6
0.586 14.88 1.84 46.8 4 H 7 6.75
0.594 15.09 1.87 47.4 4¼ H½   7.5
0.602 15.29 1.89 48 4½ I   8
0.61 15.49 1.92 48.7 4¾ J   8.75
0.618 15.7 1.94 49.3 5 J½ 9 9.25
0.626 15.9 1.97 50 5¼ K   10
0.634 16.1 1.99 50.6 5½ K½ 10 10.5
0.642 16.31 2.02 51.2 5¾ L   11.25
0.65 16.51 2.04 51.9 6 L½ 11 11.75
0.658 16.71 2.07 52.5 6¼ M 12 12.5
0.666 16.92 2.09 53.1 6½ M½ 13 13.25
0.674 17.12 2.12 53.8 6¾ N   13.75
0.682 17.32 2.14 54.4 7 N½ 14 14.5
0.69 17.53 2.17 55.1 7¼ O   15
0.698 17.73 2.19 55.7 7½ O½ 15 15.75
0.706 17.93 2.22 56.3 7¾ P   16.25
0.714 18.14 2.24 57 8 P½ 16 17
0.722 18.34 2.27 57.6 8¼ Q   17.5
0.73 18.54 2.29 58.3 8½ Q½ 17 18.25
0.738 18.75 2.32 58.9 8¾ R   19
0.746 18.95 2.34 59.5 9 R½ 18 19.5
0.754 19.15 2.37 60.2 9¼ S   20.25
0.762 19.35 2.39 60.8 9½ S½ 19 20.75
0.77 19.56 2.42 61.4 9¾ T   21.5
0.778 19.76 2.44 62.1 10 T½ 20 22
0.786 19.96 2.47 62.7 10¼ U 21 22.75
0.794 20.17 2.49 63.4 10½ U½ 22 23.25
0.802 20.37 2.52 64 10¾ V   24
0.81 20.57 2.54 64.6 11 V½ 23 24.75
0.818 20.78 2.57 65.3 11¼ W   25.25
0.826 20.98 2.59 65.9 11½ W½ 24 26
0.834 21.18 2.62 66.6 11¾ X   26.5
0.842 21.39 2.65 67.2 12 X½ 25 27.25
0.85 21.59 2.67 67.8 12¼ Y   27.75
0.858 21.79 2.7 68.5 12½ Z 26 28.5
0.866 22 2.72 69.1 12¾ Z½   29
0.874 22.2 2.75 69.7 13   27 29.75
0.882 22.4 2.77 70.4 13¼ Z1   30.5
0.89 22.61 2.8 71 13½     31
0.898 22.81 2.82 71.7 13¾ Z2   31.75
0.906 23.01 2.85 72.3 14 Z3   32.25
0.914 23.22 2.87 72.9 14¼     33
0.922 23.42 2.9 73.6 14½ Z4   33.5