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Ring Sizing

We only use North American (USA) sizes – full and half so please ORDER in USA size. We normally make all rings to order so don't worry no ring size should be refused. The Diameter below refers to the inside diameter of the ring.

Conversion chart for ring sizes
Inside diameter Inside circumference Sizes
(in) (mm) (in) (mm) USA, Can and Mex UK, Ire, Aus, SA and NZ CN , JP and S America IN IT, ES and CH
0.554 14.07 1.74 44.2 3 F 4 4.25
0.57 14.48 1.79 45.5 3½ G 5.5
0.586 14.88 1.84 46.8 4 H 7 6.75
0.602 15.29 1.89 48.0 4½ I 8 8 8
0.618 15.70 1.94 49.3 5 J½ 9 9.25
0.634 16.10 1.99 50.6 5½ K½ 10 10.5
0.65 16.51 2.04 51.9 6 L½ 11 12 11.75
0.666 16.92 2.09 53.1 6½ M½ 13 13 13.25
0.682 17.32 2.14 54.4 7 N½ 14 14 14.5
0.698 17.73 2.19 55.7 7½ O½ 15 15.75
0.714 18.14 2.24 57.0 8 P½ 16 17 17
0.73 18.54 2.29 58.3 8½ Q½ 17 18 18.25
(in) (mm) (in) (mm) USA UK CN IN IT
0.746 18.95 2.34 59.5 9 R½ 18 19.5
0.762 19.35 2.39 60.8 9½ S½ 19 21 20.75
0.778 19.76 2.44 62.1 10 T½ 20 22 22
0.794 20.17 2.49 63.4 10½ U½ 22 23.25
0.81 20.57 2.54 64.6 11 V½ 23 25 24.75
0.826 20.98 2.59 65.9 11½ W½ 24 26 26
0.842 21.39 2.65 67.2 12 X½ 25 27 27.25
0.858 21.79 2.70 68.5 12½ Z 26 28.5
0.874 22.20 2.75 69.7 13 27 30 29.75
0.89 22.61 2.80 71.0 13½ 31 31
0.906 23.01 2.85 72.3 14 Z3 32.25
0.922 23.42 2.90 73.6 14½ Z4 33.5
0.938 23.83 2.95 74.8 15 35 34.75
0.954 24.23 3.00 76.1 15½ 36 36.25
0.97 24.64 3.05 77.4 16 37 37.5
(in) (mm) (in) (mm) USA UK CN IN IT

 

If you are not sure how to use the size chart or would like to double check your results, just visit your local jeweler and they will give you your ring size.

We only use USA sizes – full and half so please inform your jeweler to give you your size in USA Size to the nearest full or half size.

Tips for Measuring Ring Size Accurately

  • Wrap a piece of string or paper around your finger.
  • Confirm the length with a ruler.
  • Remember to pull tightly. The sizer must fit snugly to produce an accurate size.
  • Don’t measure cold fingers. This is when fingers are at their smallest.
  • For the most accurate reading, measure your finger at the end of the day when it is largest.