ERA Diamond

Ring Size Chart & Conversion Guide

how to get it right

  1. Carefully cut out the template below
  2. Wrap it around your finger and put the pointed end through the slot (numbers facing outward)
  3. Pull snugly around the largest part of your finger (this could be your knuckle)
  4. The number that lines up with the slots is your ring size

how to measure ring size with string

1.

Cut a small strip of flexible string, ribbon, thread, or dental floss.

2.

Wrap it tightly (but not too tightly) around your ring finger.

3.

Compare your measurements to the Helzberg ring size chart. Double and triple check accuracy. 

International Conversion Chart

Document
Diameter (mm) Europe India UK, Australia
& South Africa
United States
& Canadaa
China Singapore
& Japan
Hong Kong
14.01 44 4 3 6 4 6
14.33 45 5 G 5
14.5 7 7.5
14.65 46 6 H 6
14.97 47 7 4 8 7 9
15.1 I 9
15.29 48 8 8 10
15.5 J
15.61 49 9 5 10 9 11
15.92 50 10 K
16.1 11 10 12
16.24 51 11 L
16.56 52 12 6 12 11 13
16.7 M 13 12
16.88 53 13 13 14.5
17.1 N 14
17.2 54 14 7 14 16
17.52 55 15 O 15
17.7 15 17
17.83 56 16 P 16
18.15 57 17 8 17 16
18.2 18
18.3 Q
18.47 58 18 18 17 19
18.79 59 19 R
19.0 9 19 18 20.5
19.11 60 20 S 20
19.43 61 21 19 22
19.6 T 21
19.75 62 22 10 20 23
20.0 23 U 22 21
20.6 63 24 10½ 22 24
20.38 64 V 23
20.6 25 11 23 25
20.70 65 W 24
21.02 66 26 11½ 25 24 26
21.2 X
21.34 67 27 12 26 25 27.75
21.6 28 Y
21.66 68 Z 12½ 26
21.97 69 29
22.29 70 30 13 27 30
22.4 Z+1
22.61 71 31 Z+2 13½
22.9 32
23.2 33
23.5 34
23.9 35
24.2 36
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