All of our rings are sold in half size increments. Quarter sizes are rarely necessary. Note that finger size can fluctuate throughout the day and due to weather. Here are some tips to get the best fit right from the get-go.
A Proper Sized Ring:
- Slides over the knuckle w/o tugging the skin.
- Rests comfortably when you bend your finger.
- Allows movement and play. You should be able to turn the ring without much pressure.
Other Tips:
- Fingers swell and contract throughout the day and with the seasons. In winter, your fingers will be thinner. In summer more swollen. The best time to size yourself is mid-late afternoon.
- Measure multiple times before you buy
- The wider the ring, the tighter the fit. If you plan to get a ring at 10mm or wider, consider going up a half size.
We highly recommend you get sized by a local jewelry shop. When you are there make sure to try some rings on with the appropriate width. The width of a ring may feel different in your ring size.
| US Ring Size | Inside Diameter (inches) | Inside Diameter (mm) | What Common Item Fits Inside |
| 4.0 | 0.586 | 14.9 | |
| 4.5 | 0.602 | 15.3 | |
| 5.0 | 0.618 | 15.7 | |
| 5.5 | 0.634 | 16.1 | |
| 6.0 | 0.650 | 16.5 | |
| 6.5 | 0.666 | 16.9 | |
| 7.0 | 0.682 | 17.3 | |
| 7.5 | 0.698 | 17.7 | |
| 8.0 | 0.714 | 18.1 | U.S. Dime ($0.10) = 17.9mm |
| 8.5 | 0.730 | 18.5 | |
| 9.0 | 0.746 | 18.9 | U.S. Penny ($0.01) = 19.05mm |
| 9.5 | 0.762 | 19.4 | |
| 10.0 | 0.778 | 19.8 | |
| 10.5 | 0.794 | 20.2 | |
| 11.0 | 0.810 | 20.6 | |
| 11.5 | 0.826 | 21.0 | |
| 12.0 | 0.842 | 21.4 | U.S. Nickel ($0.05) = 21.2mm |
| 12.5 | 0.858 | 21.8 | |
| 13.0 | 0.874 | 22.2 | |
| 13.5 | 0.890 | 22.6 | |
| 14.0 | 0.906 | 23.0 | |
| 14.5 | 0.922 | 23.4 | |
| 15.0 | 0.938 | 23.8 | |
| 15.5 | 0.954 | 24.2 | |
| 16.0 | 0.970 | 24.6 | U.S. Quarter ($0.25) = 24.26mm |