Ring Size Guide
Finding your ring size at home is simple. For the most accurate result, print our free sizer; otherwise, measure a ring you already wear or wrap your finger and compare against the chart below.
Open the printable ring sizerHow to measure
- 1. Measure a ring you already own. Choose a ring that fits the right finger, measure the inside diameter across in millimeters, and match it to the chart below.
- 2. Wrap your finger. Wrap a strip of paper or string around the base of the finger, mark where it overlaps, and measure that length in millimeters — that’s your circumference.
- 3. Use the printable sizer. Our free printable sizer (printed at 100%, verified with its ruler) is the most reliable at-home method.
US ring size chart
| US size | Inside diameter (mm) | Circumference (mm) |
|---|---|---|
| 3 | 14.0 | 44.0 |
| 3.5 | 14.5 | 45.6 |
| 4 | 14.9 | 46.8 |
| 4.5 | 15.3 | 48.1 |
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.8 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.3 |
| 7.5 | 17.7 | 55.6 |
| 8 | 18.1 | 56.9 |
| 8.5 | 18.5 | 58.1 |
| 9 | 18.9 | 59.4 |
| 9.5 | 19.4 | 60.9 |
| 10 | 19.8 | 62.2 |
| 10.5 | 20.2 | 63.5 |
| 11 | 20.6 | 64.7 |
| 11.5 | 21.0 | 66.0 |
| 12 | 21.4 | 67.2 |
| 12.5 | 21.8 | 68.5 |
| 13 | 22.2 | 69.7 |
Tips for an accurate size
- Measure at the end of the day, when fingers are at their largest.
- Avoid measuring when your hands are cold — fingers shrink and you’ll size too small.
- Wide bands fit more snugly; size up about a quarter to half size for bands ~6mm+.
- Measure the actual finger the ring will be worn on — every finger differs.
- If you’re between sizes, size up; minor adjustments are easier than stretching.
Note: we don’t offer in-house resizing — a local jeweler is faster and more affordable. Getting the size right up front is the easiest path, so take your time with the steps above.