Please refer to the ring size chart below.
Regional Symbols
US: America
EU: European countries
JP: Japan
HK: Hong Kong

Ring Sizes of Different Countries

  
US EU JP HK Diameter (mm) Circumference (mm)
0325 45 5 7 —  
035 — — — 14.5 45.5
3.75 46 6 8 14.6 45.8
4 47 7 — 14.9 46.8
4.25 — 7.5 9 15.2 47.7
045 48 8 –9.5 15.3 48.0
0475 49 8.5 10 15.7 49.3
050 50 9 11 15.8 49.6
0525 — 10 -11.5- 16.0 50.2
055 51 10.5 12 16.2 50.9
0575 — 11 12.5 16.5 51.8
060 52 11.5 13 16.6 52.1
0625 — 12 14 —  
065 53 13 –14.5 17.0 53.4
0675 54 -13.5 15 17.3 54.3
070 55 14 16 17.4 54.6
0725 — –14.5 16.5– 17.6 55.3
075 56 15 17 17.8 55.9
0775 — 16 -17.5- 18.0 56.5
080 57 — 18 18.2 57.1
0825 58 17 –18.5 18.5 58.1
085 — — 19 18.6 58.4
0875 59 18 — —  
090 — — 20 19.0 59.7
0925 60 19 21 19.3 60.6
095 61 20 — 19.4 60.9
0975 62 — 22 19.7 61.9
100 — 21 — 19.8 62.2
1025 63 22 23 20.0 62.8
105 — — 24 20.2 63.4