Ring Size Chart, Japan, China & South America
About Ring Size
Japan, China and South America (Brazil, Colombia, Argentina, Peru, Venezuela, Chile and more countries)
Other ring sizing systems: See our Int'l Ring Size Conversion Chart to convert ring size, or have a look at our other Ring Size Charts to determine ring size: USA/Canada/Mexico, Europe (France/Scandinavia), India, Italy/Spain/Netherlands/Swiss and Germany (Russia)
How to Use Ring Size Chart?
Determine ring size based on finger measurent: Use a flexible measuring tape (inches) to measure the circumference around your ring finger (exactly where the ring is supposed to be located). Do not tighten the measuring tape too much, it is supposed to sit quite loose around your finger. Look up your measurement in the ring size chart below. Find your measurement in the column "Circumference" and then find the corresponding ring size.
Find ring size based on ring measurement: Use a ruler or measuring tape (inches) to carefully measure the inside diameter of a ring (edge to edge). Make sure to measure where the diameter is largest (center). Look up your measurement in the ring size chart below (in the "Diamter" column). Find the corresponding "Ring size" - and you are ready to go shopping for rings!
See also our useful Ring Size Tips & Tricks (we are sure you will get some food for thought!)
Ring Size Chart - UK/AU Ring Size
| Ring Size |
Circumference, MM |
Diameter, MM |
| . | ||
| 1 | 39.1 | 12.5 |
| 2 | 41.7 | 13.3 |
| 3 | 42.9 | 13.7 |
| 4 | 44.2 | 14.1 |
| 5 | 44.8 | 14.3 |
| 6 | 46.1 | 14.7 |
| 7 | 46.8 | 14.9 |
| 8 | 48 | 15.3 |
| 9 | 49.3 | 15.7 |
| 10 | 50.6 | 16.1 |
| 11 | 51.9 | 16.5 |
| 12 | 52.5 | 16.7 |
| 13 | 53.1 | 16.9 |
| 14 | 54.4 | 17.3 |
| 15 | 55.7 | 17.7 |
| 16 | 57 | 18.1 |
| 17 | 58.3 | 18.5 |
| 18 | 59.5 | 19 |
| 19 | 60.8 | 19.4 |
| 20 | 62.1 | 19.8 |
| 21 | 62.7 | 20 |
| 22 | 63.4 | 20.2 |
| 23 | 64.6 | 20.6 |
| 24 | 65.9 | 21 |
| 25 | 67.2 | 21.4 |
| 26 | 68.5 | 21.8 |
| 27 | 70 | 22.3 |