| RING SIZING CONVERSION CHART |
| USA | 4 | 4 1/2 | 5 | 5 1/2 | 6 | 6 1/2 | 7 | 7 1/2 | 8 | 8 1/2 | 9 | 10 | 11 |
| Italy | - | 8 | 9.5 | 10 | 12 | 13 | 14.5 | 16 | 17 | 18 | 20 | 22 | 25 |
| UK | H 1/2 | I | J 1/2 | K 1/2 | L 1/2 | M 1/2 | N 1/2 | O 1/2 | P 1/2 | Q 1/2 | R 1/2 | T 1/2 | W |
| France | 47 | 48 | 50 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 61 | 63 |
| Japan | 7 | 8 | 9 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 20 | 23 |
| Circumference (in) | 1 27/32 | 1 7/8 | 1 15/16 | 2 | 2 1/16 | 2 1/8 | 2 3/16 | 2 1/4 | 2 5/16 | 2 3/8 | 2 7/16 | 2 9/16 | 2 11/16 |
| Circumference (mm) | 47 | 48 | 49 | 51 | 52 | 53 | 55 | 56 | 57 | 58 | 59 | 62 | 65 |
| Diameter (mm) | 14.86 | 15.27 | 15.7 | 16.1 | 16.51 | 16.92 | 17.35 | 17.75 | 18.19 | 18.53 | 18.89 | 19.84 | 20.68 |
HOW TO MEASURE THE CIRCUMFERENCE OF YOUR FINGER
STEP 1. Wrap a piece of string or paper around the base of your finger. Make sure you can slip it comfortably over your knuckle. You will get the most accurate reading if your hands are warm, not cold.
STEP 2. Use a ruler to measure the length of the string or paper. This is your finger's measurement.
If you are purchasing for a loved one and you want to keep it a surprise, secretly measure one of their rings.