Ring Blank Sizing Chart
Create the perfect length ring blank easily with this handy chart. Download a pdf of Ring Blank Sizing Chart. You can also read a text description of this information below.
To determine your ring blank length, find the desired ring size in the far left column, then read across to the appropriate material thickness. Add 0.5 mm to the length of the blank if the width of your material is greater than 4 mm.
| US Ring Size |
2.6 mm |
2.4 mm |
2.2 mm |
2.1 mm |
2.0 mm |
1.8 mm |
1.6 mm |
1.4 mm |
1.3 mm |
1.2 mm |
1.0 mm |
0.8 mm |
| 1 | 47.1 | 46.5 | 45.9 | 45.6 | 45.2 | 44.6 | 44.0 | 43.4 | 43.0 | 42.7 | 42.1 | 41.5 |
| 1 1/2 | 48.4 | 47.8 | 47.1 | 46.8 | 46.5 | 45.9 | 45.2 | 44.6 | 44.3 | 44.0 | 43.4 | 42.7 |
| 2 | 49.6 | 49.0 | 48.4 | 48.1 | 47.8 | 47.1 | 46.5 | 45.9 | 45.6 | 45.2 | 44.6 | 44.0 |
| 2 1/2 | 50.9 | 50.3 | 49.6 | 49.3 | 49.0 | 48.4 | 47.8 | 47.1 | 46.8 | 46.5 | 45.9 | 45.2 |
| 3 | 52.2 | 51.5 | 50.9 | 50.6 | 50.3 | 49.6 | 49.0 | 48.4 | 48.1 | 47.8 | 47.1 | 46.5 |
| 3 1/2 | 53.4 | 52.8 | 52.2 | 51.8 | 51.5 | 50.9 | 50.3 | 49.6 | 49.3 | 49.0 | 48.4 | 47.8 |
| 4 | 54.7 | 54.0 | 53.4 | 53.1 | 52.8 | 52.2 | 51.5 | 50.9 | 50.6 | 50.3 | 49.6 | 49.0 |
| 4 1/2 | 55.9 | 55.3 | 54.7 | 54.3 | 54.0 | 53.4 | 52.8 | 52.2 | 51.8 | 51.5 | 50.9 | 50.3 |
| 5 | 57.2 | 56.5 | 55.9 | 55.6 | 55.3 | 54.7 | 54.0 | 53.4 | 53.1 | 52.8 | 52.2 | 51.5 |
| 5 1/2 | 58.4 | 57.8 | 57.2 | 56.9 | 56.5 | 55.9 | 55.3 | 54.7 | 54.3 | 54.0 | 53.4 | 52.8 |
| 6 | 59.7 | 59.1 | 58.4 | 58.1 | 57.8 | 57.2 | 56.5 | 55.9 | 55.6 | 55.3 | 54.7 | 54.0 |
| 6 1/2 | 60.9 | 60.3 | 59.7 | 59.4 | 59.1 | 58.4 | 57.8 | 57.2 | 56.9 | 56.5 | 55.9 | 55.3 |
| 7 | 62.2 | 61.6 | 60.9 | 60.6 | 60.3 | 59.7 | 59.1 | 58.4 | 58.1 | 57.8 | 57.2 | 56.5 |
| 7 1/2 | 63.5 | 62.8 | 62.2 | 61.9 | 61.6 | 60.9 | 60.3 | 59.7 | 59.4 | 59.1 | 58.4 | 57.8 |
| 8 | 64.7 | 64.1 | 63.5 | 63.1 | 62.8 | 62.2 | 61.6 | 60.9 | 60.6 | 60.3 | 59.7 | 59.1 |
| 8 1/2 | 66.0 | 65.3 | 64.7 | 64.4 | 64.1 | 63.5 | 62.8 | 62.2 | 61.9 | 61.6 | 60.9 | 60.3 |
| 9 | 67.2 | 66.6 | 66.0 | 65.7 | 65.3 | 64.7 | 64.1 | 63.5 | 63.1 | 62.8 | 62.2 | 61.6 |
| 9 1/2 | 68.5 | 67.9 | 67.2 | 66.9 | 66.6 | 66.0 | 65.3 | 64.7 | 64.4 | 64.1 | 63.5 | 62.8 |
| 10 | 69.7 | 69.1 | 68.5 | 68.2 | 67.9 | 67.2 | 66.6 | 66.0 | 65.7 | 65.3 | 64.7 | 64.1 |
| 10 1/2 | 71.0 | 70.4 | 69.7 | 69.4 | 69.1 | 68.5 | 67.9 | 67.2 | 66.9 | 66.6 | 66.0 | 65.3 |
| 11 | 72.3 | 71.6 | 71.0 | 70.7 | 70.4 | 69.7 | 69.1 | 68.5 | 68.2 | 67.9 | 67.2 | 66.6 |
| 11 1/2 | 73.5 | 72.9 | 72.3 | 71.9 | 71.6 | 71.0 | 70.4 | 69.7 | 69.4 | 69.1 | 68.5 | 67.9 |
| 12 | 74.8 | 74.1 | 73.5 | 73.2 | 72.9 | 72.3 | 71.6 | 71.0 | 70.7 | 70.4 | 69.7 | 69.1 |
| 12 1/2 | 76.0 | 75.4 | 74.8 | 74.5 | 74.1 | 73.5 | 72.9 | 72.3 | 71.9 | 71.6 | 71.0 | 70.4 |
| 13 | 77.3 | 76.7 | 76.0 | 75.7 | 75.4 | 74.8 | 74.1 | 73.5 | 73.2 | 72.9 | 72.3 | 71.6 |
| 13 1/2 | 79.5 | 78.9 | 78.2 | 77.9 | 77.6 | 77.0 | 76.3 | 75.7 | 75.4 | 75.1 | 74.5 | 73.8 |
| 14 | 80.7 | 80.1 | 79.5 | 79.2 | 78.9 | 78.2 | 77.6 | 77.0 | 76.7 | 76.3 | 75.7 | 75.1 |
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