Ring Size Guide
Find your perfect ring size with our easy measuring guide. Use the chart below or follow the measuring instructions to ensure the best fit.
US Ring Size Chart
| US Size | Inside Diameter (mm) | Inside Circumference (mm) |
|---|---|---|
| 3 | 14.1 | 44.2 |
| 3.5 | 14.5 | 45.5 |
| 4 | 14.9 | 46.8 |
| 4.5 | 15.3 | 48.0 |
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.7 |
| 8 | 18.1 | 57.0 |
| 8.5 | 18.5 | 58.3 |
| 9 | 18.9 | 59.5 |
| 9.5 | 19.4 | 60.8 |
| 10 | 19.8 | 62.1 |
| 10.5 | 20.2 | 63.4 |
| 11 | 20.6 | 64.6 |
| 11.5 | 21.0 | 65.9 |
| 12 | 21.4 | 67.2 |
How to Measure Your Ring Size
1. Wrap
Wrap a strip of paper or a flexible measuring tape around the base of your finger.
2. Mark
Mark where the paper overlaps to determine your finger circumference.
3. Measure
Measure the length in millimeters and compare it with the chart above.
4. Verify
If you're between sizes, choose the larger size for a more comfortable fit.
Helpful Tips
- Measure your finger at the end of the day.
- Cold fingers measure smaller than warm fingers.
- Wide bands usually fit tighter—consider ordering half a size larger.
- If your knuckle is larger than your finger base, measure both and choose a size between the two.
Printable Ring Measuring Strip
Verify Scale
Before printing, ensure your printer is set to 100% Scale or Actual Size.
This line should measure exactly 100 mm after printing.