Ring Size Conversion Chart
| US/Canada Standard | Irish/British Standard |
| 3 | F |
| 3 1/4 | F 1/2 |
| 3.5 | G |
| 3.75 | G 1/2 |
| 4 | H |
| 4.25 | H 1/2 |
| 4.5 | I |
| I 1/2 | |
| 4.75 | J |
| 5 | J 1/2 |
| 5.25 | K |
| 5.5 | K 1/2 |
| 5.75 | L |
| 6 | L 1/2 |
| 6.25 | M |
| 6.5 | M 1/2 |
| 6.75 | N |
| 7 | N 1/2 |
| 7.25 | O |
| 7.5 | O 1/2 |
| 7.75 | P |
| 8 | P 1/2 |
| 8.25 | Q |
| 8.5 | Q 1/2 |
| 8.75 | R |
| 9 | R 1/2 |
| 9.25 | S |
| 9.5 | S 1/2 |
| 9.75 | T |
| 10 | T 1/2 |
| 10.25 | U |
| 10.5 | U 1/2 |
| 10.75 | V |
| 11 | V 1/2 |
| 11.25 | W |
| 11.5 | W 1/2 |
| 11.75 | X |
| 12 | X 1/2 |
| 12.25 | Y |
| 12.5 | Z |