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How to Measure your Ring Size?

Wrap a strip of paper around your finger where you’d like your ring to be and mark a spot on paper where it overlaps. Measure the distance with a ruler (mm).
If you’re using an existing ring to measure:
  1. Select an existing ring that fits the desired finger.
  2. Measure the internal diameter of the ring (in mm/inch).
  3. Use the below chart to determine your ring size.
Size Guide:
Measurements in
MM
IN
Inside diameter (mm) Inside circumference (mm) ISO (Europe) United States, Canada and Mexico United Kingdom, Ireland, Australia, South Africa and New Zealand East Asia (China, Japan, South Korea), South America India Italy, Spain, Switzerland
11.63 36.5 0
11.84 37.2 ​1⁄4
12.04 37.8 ​1⁄2 A
12.24 38.5 ​3⁄4 ​A 1⁄2
12.45 39.1 1 B 1
12.65 39.7 ​1 1⁄4 ​B 1⁄2
12.85 40.4 ​1 1⁄2 C 0.4
13.06 41 ​1 3⁄4 ​C 1⁄2 1 1
13.26 41.7 2 D 2 2 1.7
13.46 42.3 ​2 1⁄4 ​D 1⁄2 2.3
13.67 42.9 ​2 1⁄2 E 3 3 2.9
13.87 43.6 ​2 3⁄4 ​E 1⁄2 4 3.6
14.07 44.2 3 F 4 4.2
14.27 44.8 ​3 1⁄4 ​F 1⁄2 5 5 4.8
14.48 45.5 ​3 1⁄2 G 5.5
14.68 46.1 ​3 3⁄4 ​G 1⁄2 6 6 6.1
14.88 46.8 4 H 7 6.8
15.09 47.4 ​4 1⁄4 ​H 1⁄2 7 7.4
15.29 48 ​4 1⁄2 I 8 8 8
15.49 48.7 ​4 3⁄4 J 9 8.7
15.7 49.3 5 ​J 1⁄2 9 9.3
15.9 50 ​5 1⁄4 K 10 10
16.1 50.6 ​5 1⁄2 ​K 1⁄2 10 10.6
16.31 51.2 ​5 3⁄4 L 11 11.2
16.51 51.9 6 ​L 1⁄2 11 12 11.9
16.71 52.5 ​6 1⁄4 M 12 12.5
16.92 53.1 ​6 1⁄2 ​M 1⁄2 13 13 13.1
17.12 53.8 ​6 3⁄4 N 13.8
17.32 54.4 7 ​N 1⁄2 14 14 14.4
17.53 55.1 ​7 1⁄4 O 15 15.1
17.73 55.7 ​7 1⁄2 ​O 1⁄2 15 15.7
17.93 56.3 ​7 3⁄4 P 16 16.3
18.14 57 8 ​P 1⁄2 16 17 17
18.34 57.6 ​8 1⁄4 Q 17.6
18.54 58.3 ​8 1⁄2 ​Q 1⁄2 17 18 18.3
18.75 58.9 ​8 3⁄4 R 19 18.9
18.95 59.5 9 ​R 1⁄2 18 19.5
19.15 60.2 ​9 1⁄4 S 20 20.2
19.35 60.8 ​9 1⁄2 ​S 1⁄2 19 21 20.8
19.56 61.4 ​9 3⁄4 T 21.4
19.76 62.1 10 ​T 1⁄2 20 22 22.1
19.96 62.7 ​10 1⁄4 U 21 23 22.7
20.17 63.4 ​10 1⁄2 ​U 1⁄2 22 23.4
20.37 64 ​10 3⁄4 V 24 24
20.57 64.6 11 ​V 1⁄2 23 25 24.6
20.78 65.3 ​11 1⁄4 W 25.3
20.98 65.9 ​11 1⁄2 ​W 1⁄2 24 26 25.9
21.18 66.6 ​11 3⁄4 X 26.6
21.39 67.2 12 ​X 1⁄2 25 27 27.2
21.59 67.8 ​12 1⁄4 Y 28 27.8
21.79 68.5 ​12 1⁄2 Z 26 28.5
22 69.1 ​12 3⁄4 ​Z 1⁄2 29 29.1
22.2 69.7 13 27 30 29.7
22.4 70.4 ​13 1⁄4 Z1 30.4
22.61 71 ​13 1⁄2 31 31
22.81 71.7 ​13 3⁄4 Z2 32 31.7
23.01 72.3 14 Z3 32.3
23.22 72.9 ​14 1⁄4 33 32.9
23.42 73.6 ​14 1⁄2 Z4 33.6
23.62 74.2 ​14 3⁄4 34 34.2
23.83 74.8 15 35 34.8
24.03 75.5 ​15 1⁄4 35.5
24.23 76.1 ​15 1⁄2 36 36.1
24.43 76.8 ​15 3⁄4 36.8
24.64 77.4 16 37 37.4
Inside diameter (in) Inside circumference (in) United States, Canada and Mexico Sizes Comparisons United Kingdom, Ireland, Australia, South Africa and New Zealand East Asia (China, Japan, South Korea), South America India Italy, Spain, Switzerland
0.458 1.44 0
0.466 1.46 ​1⁄4
0.474 1.49 ​1⁄2 A
0.482 1.51 ​3⁄4 ​A 1⁄2
0.49 1.54 1 B 1
0.498 1.56 ​1 1⁄4 ​B 1⁄2
0.506 1.59 ​1 1⁄2 C 0.4
0.514 1.61 ​1 3⁄4 ​C 1⁄2 1 1
0.522 1.64 2 D 2 2 1.7
0.53 1.67 ​2 1⁄4 ​D 1⁄2 2.3
0.538 1.69 ​2 1⁄2 E 3 3 2.9
0.546 1.72 ​2 3⁄4 ​E 1⁄2 4 3.6
0.554 1.74 3 F 4 4.2
0.562 1.77 ​3 1⁄4 ​F 1⁄2 5 5 4.8
0.57 1.79 ​3 1⁄2 G 5.5
0.578 1.82 ​3 3⁄4 ​G 1⁄2 6 6 6.1
0.586 1.84 4 H 7 6.8
0.594 1.87 ​4 1⁄4 ​H 1⁄2 7 7.4
0.602 1.89 ​4 1⁄2 I 8 8 8
0.61 1.92 ​4 3⁄4 J 9 8.7
0.618 1.94 5 ​J 1⁄2 9 9.3
0.626 1.97 ​5 1⁄4 K 10 10
0.634 1.99 ​5 1⁄2 ​K 1⁄2 10 10.6
0.642 2.02 ​5 3⁄4 L 11 11.2
0.65 2.04 6 ​L 1⁄2 11 12 11.9
0.658 2.07 ​6 1⁄4 M 12 12.5
0.666 2.09 ​6 1⁄2 ​M 1⁄2 13 13 13.1
0.674 2.12 ​6 3⁄4 N 13.8
0.682 2.14 7 ​N 1⁄2 14 14 14.4
0.69 2.17 ​7 1⁄4 O 15 15.1
0.698 2.19 ​7 1⁄2 ​O 1⁄2 15 15.7
0.706 2.22 ​7 3⁄4 P 16 16.3
0.714 2.24 8 ​P 1⁄2 16 17 17
0.722 2.27 ​8 1⁄4 Q 17.6
0.73 2.29 ​8 1⁄2 ​Q 1⁄2 17 18 18.3
0.738 2.32 ​8 3⁄4 R 19 18.9
0.746 2.34 9 ​R 1⁄2 18 19.5
0.754 2.37 ​9 1⁄4 S 20 20.2
0.762 2.39 ​9 1⁄2 ​S 1⁄2 19 21 20.8
0.77 2.42 ​9 3⁄4 T 21.4
0.778 2.44 10 ​T 1⁄2 20 22 22.1
0.786 2.47 ​10 1⁄4 U 21 23 22.7
0.794 2.49 ​10 1⁄2 ​U 1⁄2 22 23.4
0.802 2.52 ​10 3⁄4 V 24 24
0.81 2.54 11 ​V 1⁄2 23 25 24.6
0.818 2.57 ​11 1⁄4 W 25.3
0.826 2.59 ​11 1⁄2 ​W 1⁄2 24 26 25.9
0.834 2.62 ​11 3⁄4 X 26.6
0.842 2.65 12 ​X 1⁄2 25 27 27.2
0.85 2.67 ​12 1⁄4 Y 28 27.8
0.858 2.7 ​12 1⁄2 Z 26 28.5
0.866 2.72 ​12 3⁄4 ​Z 1⁄2 29 29.1
0.874 2.75 13 27 30 29.7
0.882 2.77 ​13 1⁄4 Z1 30.4
0.89 2.8 ​13 1⁄2 31 31
0.898 2.82 ​13 3⁄4 Z2 32 31.7
0.906 2.85 14 Z3 32.3
0.914 2.87 ​14 1⁄4 33 32.9
0.922 2.9 ​14 1⁄2 Z4 33.6
0.93 2.92 ​14 3⁄4 34 34.2
0.938 2.95 15 35 34.8
0.946 2.97 ​15 1⁄4 35.5
0.954 3 ​15 1⁄2 36 36.1
0.962 3.02 ​15 3⁄4 36.8
0.97 3.05 16 37 37.4
Tab Content #3
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