Ring Size Guide - Find your perfect size

Ring Size Guide - Find your perfect size

Choosing the right ring size is just as important as choosing the design. Whether you're buying for yourself or as a gift, this guide covers ring sizes for both men and women. Use our ring size chart in mm and cm to convert between EU and US and get the perfect fit.

Ring Size Chart European to US

Our mens ring size chart are identical to the women's size chart—ring sizing is unisex. Use the table below to convert European ring size to US, with measurements in inches, millimeters and centimeters.

Common ring size conversions from European to US:

  • 60 mm ring size is a US size 9 1/4
  • 65 mm ring size is a US size 11 1/4
  • 70 mm ring size is a US size 13 1/4
  • 53 mm ring size is a US size 6 1/2
  • 68 mm ring size is a US size 12 1/4
  • 53 ring size is US 6 3/4
  • 54 ring size is US 6 3/4
EU Size US Size Inner Diameter (in) Inner circumference (in) Inner Diameter (mm) Inner Diameter (cm) Inner circumference (mm)
31 -2 1/4 6/16 in 1 4/16 in 10 mm 1.0 cm 31 mm
32 -1 3/4 6/16 in 1 4/16 in 10 mm 1.0 cm 32 mm
33 -1 1/4 7/16 in 1 5/16 in 11 mm 1.1 cm 33 mm
34 -1 7/16 in 1 5/16 in 11 mm 1.1 cm 34 mm
35 -1/2 7/16 in 1 6/16 in 11 mm 1.1 cm 35 mm
36 -1/4 7/16 in 1 7/16 in 11 mm 1.1 cm 36 mm
37 1/4 7/16 in 1 7/16 in 12 mm 1.2 cm 37 mm
38 1/2 8/16 in 1 8/16 in 12 mm 1.2 cm 38 mm
39 1 8/16 in 1 9/16 in 12 mm 1.2 cm 39 mm
40 1 1/4 8/16 in 1 9/16 in 13 mm 1.3 cm 40 mm
41 1 3/4 8/16 in 1 10/16 in 13 mm 1.3 cm 41 mm
42 2 1/4 8/16 in 1 10/16 in 13 mm 1.3 cm 42 mm
43 2 1/2 9/16 in 1 11/16 in 14 mm 1.4 cm 43 mm
44 3 9/16 in 1 12/16 in 14 mm 1.4 cm 44 mm
45 3 1/4 9/16 in 1 12/16 in 14 mm 1.4 cm 45 mm
46 3 3/4 9/16 in 1 13/16 in 15 mm 1.5 cm 46 mm
47 4 9/16 in 1 14/16 in 15 mm 1.5 cm 47 mm
48 4 1/2 10/16 in 1 14/16 in 15 mm 1.5 cm 48 mm
49 5 10/16 in 1 15/16 in 16 mm 1.6 cm 49 mm
50 5 1/4 10/16 in 1 15/16 in 16 mm 1.6 cm 50 mm
51 5 3/4 10/16 in 2 in 16 mm 1.6 cm 51 mm
52 6 10/16 in 2 1/16 in 17 mm 1.7 cm 52 mm
53 6 1/2 11/16 in 2 1/16 in 17 mm 1.7 cm 53 mm
54 6 3/4 11/16 in 2 2/16 in 17 mm 1.7 cm 54 mm
55 7 1/4 11/16 in 2 3/16 in 18 mm 1.8 cm 55 mm
56 7 3/4 11/16 in 2 3/16 in 18 mm 1.8 cm 56 mm
57 8 11/16 in 2 4/16 in 18 mm 1.8 cm 57 mm
58 8 1/2 12/16 in 2 5/16 in 18 mm 1.8 cm 58 mm
59 8 3/4 12/16 in 2 5/16 in 19 mm 1.9 cm 59 mm
60 9 1/4 12/16 in 2 6/16 in 19 mm 1.9 cm 60 mm
61 9 1/2 12/16 in 2 6/16 in 19 mm 1.9 cm 61 mm
62 10 12/16 in 2 7/16 in 20 mm 2.0 cm 62 mm
63 10 1/2 13/16 in 2 8/16 in 20 mm 2.0 cm 63 mm
64 10 3/4 13/16 in 2 8/16 in 20 mm 2.0 cm 64 mm
65 11 1/4 13/16 in 2 9/16 in 21 mm 2.1 cm 65 mm
66 11 1/2 13/16 in 2 10/16 in 21 mm 2.1 cm 66 mm
67 12 13/16 in 2 10/16 in 21 mm 2.1 cm 67 mm
68 12 1/4 14/16 in 2 11/16 in 22 mm 2.2 cm 68 mm
69 12 3/4 14/16 in 2 11/16 in 22 mm 2.2 cm 69 mm
70 13 1/4 14/16 in 2 12/16 in 22 mm 2.2 cm 70 mm
71 13 1/2 14/16 in 2 13/16 in 23 mm 2.3 cm 71 mm
72 14 14/16 in 2 13/16 in 23 mm 2.3 cm 72 mm
73 14 1/4 15/16 in 2 14/16 in 23 mm 2.3 cm 73 mm
74 14 3/4 15/16 in 2 15/16 in 24 mm 2.4 cm 74 mm
75 15 15/16 in 2 15/16 in 24 mm 2.4 cm 75 mm
76 15 1/2 15/16 in 3 in 24 mm 2.4 cm 76 mm
77 16 15/16 in 3 1/16 in 25 mm 2.5 cm 77 mm
78 16 1/4 1 in 3 1/16 in 25 mm 2.5 cm 78 mm
79 16 3/4 1 in 3 2/16 in 25 mm 2.5 cm 79 mm
80 17 1 in 3 2/16 in 25 mm 2.5 cm 80 mm
81 17 1/2 1 in 3 3/16 in 26 mm 2.6 cm 81 mm
82 17 3/4 1 in 3 4/16 in 26 mm 2.6 cm 82 mm
83 18 1/4 1 1/16 in 3 4/16 in 26 mm 2.6 cm 83 mm
84 18 3/4 1 1/16 in 3 5/16 in 27 mm 2.7 cm 84 mm
85 19 1 1/16 in 3 6/16 in 27 mm 2.7 cm 85 mm
86 19 1/2 1 1/16 in 3 6/16 in 27 mm 2.7 cm 86 mm
87 19 3/4 1 1/16 in 3 7/16 in 28 mm 2.8 cm 87 mm
88 20 1/4 1 2/16 in 3 7/16 in 28 mm 2.8 cm 88 mm
89 20 1/2 1 2/16 in 3 8/16 in 28 mm 2.8 cm 89 mm

Ring Size Chart US to European

Our mens ring size chart and women's size chart are identical—ring sizing is unisex. Use the table below to convert US ring sizes to european, with measurements in millimeters, centimeters and inches.

Common ring size conversions US to EU:

  • US size 9 ring is 59 EU
  • US size 7 ring is 54 EU
  • US size 6 ring is 52 EU
  • US size 11 ring is 65 EU
  • US size 8 ring is 57 EU
  • US size 10 ring is 62 EU
  • US size 2 3/4 ring is 44 EU
  • US size 3 ring is 44 EU
US Size EU Size Inner Diameter (in) Inner circumference (in) Inner Diameter (mm) Inner Diameter (cm) Inner circumference (mm)
0 37 7/16 in 1 7/16 in 12 mm 1.2 cm 37 mm
1/4 37 7/16 in 1 7/16 in 12 mm 1.2 cm 37 mm
1/2 38 8/16 in 1 8/16 in 12 mm 1.2 cm 38 mm
3/4 38 8/16 in 1 8/16 in 12 mm 1.2 cm 38 mm
1 39 8/16 in 1 9/16 in 12 mm 1.2 cm 39 mm
1 1/4 40 8/16 in 1 9/16 in 13 mm 1.3 cm 40 mm
1 1/2 40 8/16 in 1 9/16 in 13 mm 1.3 cm 40 mm
1 3/4 41 8/16 in 1 10/16 in 13 mm 1.3 cm 41 mm
2 42 8/16 in 1 10/16 in 13 mm 1.3 cm 42 mm
2 1/4 42 8/16 in 1 11/16 in 13 mm 1.3 cm 42 mm
2 1/2 43 9/16 in 1 11/16 in 14 mm 1.4 cm 43 mm
2 3/4 44 9/16 in 1 11/16 in 14 mm 1.4 cm 44 mm
3 44 9/16 in 1 12/16 in 14 mm 1.4 cm 44 mm
3 1/4 45 9/16 in 1 12/16 in 14 mm 1.4 cm 45 mm
3 1/2 45 9/16 in 1 13/16 in 14 mm 1.4 cm 45 mm
3 3/4 46 9/16 in 1 13/16 in 15 mm 1.5 cm 46 mm
4 47 9/16 in 1 13/16 in 15 mm 1.5 cm 47 mm
4 1/4 47 9/16 in 1 14/16 in 15 mm 1.5 cm 47 mm
4 1/2 48 10/16 in 1 14/16 in 15 mm 1.5 cm 48 mm
4 3/4 49 10/16 in 1 15/16 in 15 mm 1.5 cm 49 mm
5 49 10/16 in 1 15/16 in 16 mm 1.6 cm 49 mm
5 1/4 50 10/16 in 1 15/16 in 16 mm 1.6 cm 50 mm
5 1/2 51 10/16 in 2 in 16 mm 1.6 cm 51 mm
5 3/4 51 10/16 in 2 in 16 mm 1.6 cm 51 mm
6 52 10/16 in 2 1/16 in 16 mm 1.6 cm 52 mm
6 1/4 52 11/16 in 2 1/16 in 17 mm 1.7 cm 52 mm
6 1/2 53 11/16 in 2 1/16 in 17 mm 1.7 cm 53 mm
6 3/4 54 11/16 in 2 2/16 in 17 mm 1.7 cm 54 mm
7 54 11/16 in 2 2/16 in 17 mm 1.7 cm 54 mm
7 1/4 55 11/16 in 2 3/16 in 18 mm 1.8 cm 55 mm
7 1/2 56 11/16 in 2 3/16 in 18 mm 1.8 cm 56 mm
7 3/4 56 11/16 in 2 3/16 in 18 mm 1.8 cm 56 mm
8 57 11/16 in 2 4/16 in 18 mm 1.8 cm 57 mm
8 1/4 58 12/16 in 2 4/16 in 18 mm 1.8 cm 58 mm
8 1/2 58 12/16 in 2 5/16 in 19 mm 1.9 cm 58 mm
8 3/4 59 12/16 in 2 5/16 in 19 mm 1.9 cm 59 mm
9 59 12/16 in 2 5/16 in 19 mm 1.9 cm 59 mm
9 1/4 60 12/16 in 2 6/16 in 19 mm 1.9 cm 60 mm
9 1/2 61 12/16 in 2 6/16 in 19 mm 1.9 cm 61 mm
9 3/4 61 12/16 in 2 7/16 in 20 mm 2.0 cm 61 mm
10 62 12/16 in 2 7/16 in 20 mm 2.0 cm 62 mm
10 1/4 63 13/16 in 2 7/16 in 20 mm 2.0 cm 63 mm
10 1/2 63 13/16 in 2 8/16 in 20 mm 2.0 cm 63 mm
10 3/4 64 13/16 in 2 8/16 in 20 mm 2.0 cm 64 mm
11 65 13/16 in 2 9/16 in 21 mm 2.1 cm 65 mm
11 1/4 65 13/16 in 2 9/16 in 21 mm 2.1 cm 65 mm
11 1/2 66 13/16 in 2 9/16 in 21 mm 2.1 cm 66 mm
11 3/4 66 13/16 in 2 10/16 in 21 mm 2.1 cm 66 mm
12 67 13/16 in 2 10/16 in 21 mm 2.1 cm 67 mm
12 1/4 68 14/16 in 2 11/16 in 22 mm 2.2 cm 68 mm
12 1/2 68 14/16 in 2 11/16 in 22 mm 2.2 cm 68 mm
12 3/4 69 14/16 in 2 11/16 in 22 mm 2.2 cm 69 mm
13 70 14/16 in 2 12/16 in 22 mm 2.2 cm 70 mm
13 1/4 70 14/16 in 2 12/16 in 22 mm 2.2 cm 70 mm
13 1/2 71 14/16 in 2 13/16 in 23 mm 2.3 cm 71 mm
13 3/4 72 14/16 in 2 13/16 in 23 mm 2.3 cm 72 mm
14 72 14/16 in 2 13/16 in 23 mm 2.3 cm 72 mm

How to Measure Your Ring Size at Home

The easiest way to measure your finger is with a strip of paper or string. Wrap it around the base of your finger, mark where it overlaps, and measure the length in millimeters. Then, match the measurement to the chart below to find your ring size in mm or cm.

Don't Have a Ruler?

You can also use our printable ring size template to compare against an existing ring and find the right size.

Final Tips on Finding the Right Ring Size

  • Measure your finger at the end of the day when it's largest.
  • Don't measure cold fingers—your size can shrink half a size.
  • Use our printable ring size chart for an easy at-home solution.
  • If you're between sizes, choose the larger one for comfort.
  • You can go to pretty much any jeweller and get your finger measured. They will have the right tools.
  • Jewellers can resize most rings. Only if the band is extremely intricate can it be problematic. It can however always still be done.

Whether you're shopping by ring size in cm, looking for a mens ring sizes chart, or want to convert a size 54 ring in US terms, our guide simplifies everything. Use this ring size mm chart to easily match your finger diameter to ring size or convert from EU ring size to US—no guesswork, no stress.

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