Most C. Disston rings are offered in US sizes 4 to 10, including half sizes. If you're between sizes or unsure, get in touch before ordering and I'll help you choose.
Measure a ring you already own
Choose a ring that fits the finger you plan to wear the new one on. Measure the inside diameter, edge to edge, in millimeters, and find the closest match in the chart below.
Measure your finger
- Wrap a thin strip of paper or string snugly around the base of your finger.
- Mark where it overlaps, then measure the length in millimeters. That's the circumference.
- Find the closest match in the chart. If you fall between two sizes, choose the larger one.
US ring size chart
| US size | Inside diameter | Circumference |
|---|---|---|
| 4 | 14.9 mm | 46.8 mm |
| 4.5 | 15.3 mm | 48.0 mm |
| 5 | 15.7 mm | 49.3 mm |
| 5.5 | 16.1 mm | 50.6 mm |
| 6 | 16.5 mm | 51.9 mm |
| 6.5 | 16.9 mm | 53.1 mm |
| 7 | 17.3 mm | 54.4 mm |
| 7.5 | 17.7 mm | 55.7 mm |
| 8 | 18.1 mm | 57.0 mm |
| 8.5 | 18.5 mm | 58.3 mm |
| 9 | 18.9 mm | 59.5 mm |
| 9.5 | 19.4 mm | 60.8 mm |
| 10 | 19.8 mm | 62.1 mm |
| 10.5 | 20.2 mm | 63.4 mm |
Tips for an accurate fit
- Measure at the end of the day, when your fingers are warm. Fingers are smaller in the morning and in cold weather.
- Make sure the ring will slide over your knuckle.
- Wide bands fit more snugly, so consider going up a quarter to half size.
- Measure two or three times for accuracy.
Resizing
C. Disston one-of-a-kind rings and estate rings over $1,500 can be resized up to two sizes up or down, complimentary. For made-to-order and bespoke pieces, the first resizing is complimentary on any order over $1,000. Questions? Get in touch or book an appointment to be sized in person in the Bay Area.