RING SIZE GUIDE

Ring Sizing Conversion Chart

The chart below provides a guide to ring sizes, including finger circumference and international size conversions.

All Lilly M. JEWELERS rings are crafted in standard US sizing,
ensuring consistency across our vintage-inspired engagement rings, wedding bands, and fine jewelry creations.

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Inside Diameter
(mm)		 Circumference
(mm)		 US / Canada Continental Europe UK / AUS / NZ China / Japan / Korea
14.07 44.20 3 4.25 F 4
14.48 45.50 3.5 5.50 G 5
14.88 46.80 4 6.75 H 7
15.29 48.00 4.5 8.00 I 8
15.70 49.30 5 9.25 J 1/2 9
16.10 50.60 5.5 10.50 K 1/2 10
16.51 51.90 6 11.75 L 1/2 12
16.92 53.10 6.5 13.25 M 1/2 13
17.32 54.40 7 14.50 N 1/2 14
17.73 55.70 7.5 15.75 O 1/2 15
18.14 57.00 8 17.00 P 1/2 16
18.54 58.30 8.5 18.25 Q 1/2 17
18.95 59.50 9 19.50 R 1/2 18
19.35 60.80 9.5 20.75 S 1/2 19
19.76 62.10 10 22.00 T 1/2 20
20.17 63.40 10.5 23.25 U 1/2 22
20.57 64.60 11 24.75 V 1/2 23
20.98 65.90 11.5 26.00 W 1/2 24
21.39 67.20 12 27.25 X 1/2 25
21.79 68.50 12.5 28.50 Y 26
22.20 69.70 13 29.75 Z 1/2 27

How To Measure
Your Ring Size at Home