Size guide
Ring size guide
Find your size in two minutes, then match it in the chart below. Our men's rings come in sizes 8 to 14 and ladies' rings in sizes 4 to 10, including half sizes.
How to measure at home
Measure a ring that fits
Lay a ring that fits the right finger on a ruler and measure straight across the inside, edge to edge, in millimeters. Find that number in the Inside diameter column.
Wrap a string or paper strip
Wrap a thin strip of paper or string around the base of your finger, mark where it meets, then measure the length in millimeters. Find that number in the Circumference column. Make sure it can slide over your knuckle.
Ring size chart
| US & Canada | UK & Australia/AU | EuropeEU | JapanJP | Inside diameter (mm)Diam. mm | Circumference (mm)Circ. mm |
|---|---|---|---|---|---|
| 3 | F | 44 | 4 | 14.1 | 44.2 |
| 3.5 | G | 45 | 5 | 14.5 | 45.5 |
| 4 | H | 47 | 7 | 14.9 | 46.8 |
| 4.5 | I | 48 | 8 | 15.3 | 48.0 |
| 5 | J½ | 49 | 9 | 15.7 | 49.3 |
| 5.5 | K½ | 50 | 10 | 16.1 | 50.6 |
| 6 | L½ | 52 | 11 | 16.5 | 51.9 |
| 6.5 | M½ | 53 | 13 | 16.9 | 53.1 |
| 7 | O | 54 | 14 | 17.3 | 54.4 |
| 7.5 | P | 55 | 15 | 17.7 | 55.7 |
| 8 | Q | 57 | 16 | 18.1 | 57.0 |
| 8.5 | R | 58 | 17 | 18.5 | 58.3 |
| 9 | S | 59 | 18 | 18.9 | 59.5 |
| 9.5 | T | 60 | 19 | 19.4 | 60.8 |
| 10 | U | 62 | 20 | 19.8 | 62.1 |
| 10.5 | V | 63 | 22 | 20.2 | 63.4 |
| 11 | W | 64 | 23 | 20.6 | 64.6 |
| 11.5 | X | 65 | 24 | 21.0 | 65.9 |
| 12 | Y | 67 | 25 | 21.4 | 67.2 |
| 12.5 | Z | 68 | 26 | 21.8 | 68.5 |
| 13 | Z+1 | 69 | 27 | 22.2 | 69.7 |
| 13.5 | Z+2 | 70 | – | 22.6 | 71.0 |
| 14 | Z+3 | 72 | – | 23.0 | 72.3 |
| 14.5 | Z+4 | 73 | – | 23.4 | 73.5 |
| 15 | Z+5 | 74 | – | 23.8 | 74.8 |
Sizes between countries are close matches. For the most accurate fit, use the millimeter measurements.