International Ring Size Conversion Chart

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Use this chart to convert your local standard to the US ring sizes for ordering, we can also calculate the size from the millimeter as well, that is also listed for your convenience.

Measurement Ring Size Equivalents
Inches MM US British French German Swiss Singapore
Japanese
Hong
Kong
44.53F4414446
1 25/3245.2G4514.568
1 13/16464H4715778.5
1 7/847.6I4815.5989.5
1 15/1649.25J5015.810910.5
250.8K5216121011.5
2 1/1652.46L5316.5131213.5
2 3/3253.2M5417141314.5
2 1/8547N5517.3151415.5
2 3/1655.6O5717.816½1516.5
57.2 8 P 58 18 18 16 17.5
2 5/32 54.8 Q 59 18.5 19 17 18
2 5/16 58.7 9 R 60 19 20 18 19
2 3/8 60.3 S 61 19.5 21½ 19 20
2 7/16 61.9 10 T 62 20.3 22 20 21
63.5 10½ U 63 20.8 23½ 22 23
2 9/16 65.1 11 W 64 21 25 23 24
2 19/32 65.9 11½ X 66 21.3 26 24 25
2 5/8 66.7 12 Y 67 21.8 27½ 25 26
2 11/16 68.3 12½ Z 69 22 29 26 27
69.9 13 ---- ---- ---- ---- 27 28

 

 

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