Ring sizes - CHART
How to define a ring size?
1. Measure the diameter of any other ring that fits a given finger. Read out the ring size that matches the diameter.
2.Measure a finger’s circumference. Read out the size matching the circumference.
Please remember that ring sizes are measured up to 1/10 of millimeter. So the difference between two adjacent sizes might be so small that insignificant and be in the measurement – ballpark.
Italy | USA | UK | China | Inside diameter | Inside circumference | Inside diameter | Inside circumference |
8 | 4½ | I | 8 | 15,29 mm | 48 mm | 0,602 in | 1,89 in |
8,75 | 4¾ | J | 15,49 mm | 48,7 mm | 0,61 in | 1,92 in | |
9,25 | 5 | J½ | 9 | 15,70 mm | 49,3 mm | 0,618 in | 1,94 in |
10 | 5¼ | K | 15,90 mm | 50 mm | 0,626 in | 1,97 in | |
10,5 | 5½ | K½ | 10 | 16,10 mm | 50,60 mm | 0,634 in | 1,99 in |
11,25 | 5¾ | L | 16,31 mm | 51,20 mm | 0,642 in | 2,02 in | |
11,75 | 6 | L½ | 11 | 16,51 mm | 51,90 mm | 0,65 in | 2,04 in |
12,5 | 6¼ | M | 12 | 16,71 mm | 52,50 mm | 0,658 in | 2,07 in |
13,25 | 6½ | M½ | 13 | 16,92 mm | 53,10 mm | 0,666 in | 2,09 in |
13,75 | 6¾ | N | 17,12 mm | 53,80 mm | 0,674 in | 2,14 in | |
14,50 | 7 | N½ | 14 | 17,32 mm | 54,40 mm | 0,682 in | 2,12 in |
15 | 7¼ | O | 17,53 mm | 55,10 mm | 0,69 in | 2,17 in | |
15,75 | 7½ | O½ | 15 | 17,73 mm | 55,70 mm | 0,698 in | 2,19 in |
16,25 | 7¾ | P | 17,93 mm | 56,30 mm | 0,706 in | 2,22 in | |
17 | 8 | P½ | 16 | 18,14 mm | 57,00 mm | 0,714 in | 2,24 in |
17,50 | 8¼ | Q | 18,34 mm | 57,60mm | 0,722 in | 2,27 in | |
18,25 | 8½ | Q½ | 17 | 18,54 mm | 58,30 mm | 0,73 in | 2,29 in |