Ring size guide. Ring conversion chart
If you are not sure of your Claddagh ring size we strongly recommend you visit your local jeweler. However, if you cannot get to a jeweler you can either use the ring size guide outlined below or we can send you a Free Ring Sizer.
Please note ring sizes other than the ones specified are custom made and we ask you to contact us for a quote. Custom-made rings are not covered by our standard 60-day return policy unless the goods are faulty.
How to find your ring size
- Find a strip of paper.
- Wrap it around the base of the appropriate finger. Make sure the paper fits snugly. You should be able to slip it over your knuckle.
- Using a pen – mark the point on the paper where it overlaps forming a complete circle.
- Measure the length from the starting end of the paper to the pen mark using a ruler with a millimeter measurement.
- Check this measurement with the chart below to determine your ring size.
- Below is a ring size conversion chart for our international customers:
Ring size conversion chart
| U.S.A. & Canada Ring Size | Ireland, U.K. & Australia Ring Size | German Ring Size | French Ring Size | Japan Ring Size | Spanish, Italian & Swiss Ring Size | Inside Diameter (mm) | Inside Circumference (mm) |
| 1 | B | – | – | 1 | – | 12.45 | 39.1 |
| 1 1/2 | C | – | – | – | – | 12.85 | 40.4 |
| 2 | D | 13 1/4 | 41 1/2 | 2 | 1 1/2 | 13.26 | 41.7 |
| 2 1/4 | D 1/2 | 13 1/2 | 42 1/8 | – | – | 13.46 | 42.3 |
| 2 1/2 | E | 13 3/4 | 42 3/4 | 3 | 2 3/4 | 13.67 | 42.9 |
| 2 3/4 | E 1/2 | – | 43 3/8 | – | 3 3/8 | 13.87 | 43.6 |
| 3 | F | 14 | 44 | 4 | 4 | 14.07 | 44.2 |
| 3 1/4 | F 1/2 | 14 1/4 | 44 5/8 | – | 4 5/8 | 14.27 | 44.8 |
| 3 1/2 | G | 14 1/2 | 45 1/4 | 5 | 5 1/4 | 14.48 | 45.5 |
| 3 3/4 | G 1/2 | 14 3/4 | 45 7/8 | 6 | 5 7/8 | 14.68 | 46.1 |
| 4 | H 1/2 | 15 | 46 1/2 | 7 | 6 1/2 | 14.88 | 46.8 |
| 4 1/4 | I | – | 47 1/8 | – | 7 1/8 | 15.09 | 47.4 |
| 4 1/2 | I 1/2 | 15 1/4 | 47 3/4 | 8 | 7 3/4 | 15.29 | 48.0 |
| 4 3/4 | J | 15 1/2 | 48 3/8 | – | 8 3/8 | 15.49 | 48.7 |
| 5 | J 1/2 | 15 3/4 | 49 | 9 | 9 | 15.70 | 49.3 |
| 5 1/4 | K | 16 | 49 5/8 | – | 9 5/8 | 15.90 | 50.0 |
| 5 1/2 | K 1/2 | 16 1/4 | 50 1/4 | 10 | 10 1/4 | 16.10 | 50.6 |
| 5 3/4 | L | – | 50 7/8 | 11 | 10 7/8 | 16.31 | 51.2 |
| 6 | L 1/2 | 16 1/2 | 51 1/2 | 12 | 11 1/2 | 16.51 | 51.9 |
| 6 1/4 | M | 16 3/4 | 52 1/8 | – | 12 1/8 | 16.71 | 52.5 |
| 6 1/2 | M 1/2 | 17 | 52 3/4 | 13 | 12 3/4 | 16.92 | 53.1 |
| 6 3/4 | N | – | 53 3/8 | – | 13 3/8 | 17.12 | 53.8 |
| 7 | O | 17 1/4 | 54 | 14 | 14 | 17.32 | 54.4 |
| 7 1/4 | O 1/2 | 17 1/2 | 54 5/8 | – | 14 5/8 | 17.53 | 55.1 |
| 7 1/2 | P | 17 3/4 | 55 1/4 | 15 | 15 1/4 | 17.73 | 55.7 |
| 7 3/4 | P 1/2 | 18 | 55 7/8 | – | 15 7/8 | 17.93 | 56.3 |
| 8 | Q | – | 56 1/2 | 16 | 16 1/2 | 18.14 | 57.0 |
| 8 1/4 | Q 1/2 | 18 1/4 | 57 1/8 | – | 17 1/8 | 18.34 | 57.6 |
| 8 1/2 | R | 18 1/2 | 57 3/4 | 17 | 17 3/4 | 18.54 | 58.3 |
| 8 3/4 | R 1/2 | 18 3/4 | 58 3/8 | – | 18 3/8 | 18.75 | 58.9 |
| 9 | S | 19 | 59 | 18 | 19 | 18.95 | 59.5 |
| 9 1/4 | S 1/2 | 19 1/4 | 59 5/8 | – | 19 5/8 | 19.15 | 60.2 |
| 9 1/2 | – | 19 1/2 | 60 1/4 | 19 | 20 1/4 | 19.35 | 60.8 |
| 9 3/4 | T | – | 60 7/8 | – | 20 7/8 | 19.56 | 61.4 |
| 10 | T 1/2 | 19 3/4 | 61 1/2 | 20 | 21 1/2 | 19.76 | 62.1 |
| 10 1/4 | U | 20 | 62 1/8 | 21 | 22 1/8 | 19.96 | 62.7 |
| 10 1/2 | U 1/2 | – | 62 3/4 | 22 | 22 3/4 | 20.17 | 63.4 |
| 10 3/4 | V | 20 1/2 | 63 3/8 | – | 23 3/8 | 20.37 | 64.0 |
| 11 | V 1/2 | 20 3/4 | 64 | 23 | 24 | 20.57 | 64.6 |
| 11 1/4 | W | – | 64 5/8 | – | 24 5/8 | 20.78 | 65.3 |
| 11 1/2 | W 1/2 | 21 | 65 1/4 | 24 | 25 1/4 | 20.98 | 65.9 |
| 11 3/4 | X | 21 1/4 | 65 7/8 | – | 25 7/8 | 21.18 | 66.6 |
| 12 | Y | 21 1/2 | 66 1/2 | 25 | 26 1/2 | 21.39 | 67.2 |
| 12 1/4 | Y 1/2 | – | 67 1/8 | – | 27 1/8 | 21.59 | 67.8 |
| 12 1/2 | Z | 21 3/4 | 67 3/4 | 26 | 27 3/4 | 21.79 | 68.5 |
| 12 3/4 | Z 1/2 | – | 68 3/8 | – | 28 3/8 | 22.00 | 69.1 |
| 13 | – | 22 | 69 | 27 | 29 | 22.20 | 69.7 |
If you want us to send you a Free Ring Sizer please fill in the form below:
