Ring size chart and sizer
PDF, 2 pages
US sizes 3 to 13 in millimeters, a cut-out sizer strip, and a calibration ruler. Print at 100%.
Print at 100% and check the ruler.
Ring size chart
US sizes 3 to 13 with inside diameter and circumference in millimeters, plus a free printable sizer.
US ring size chart
Find your size by inside diameter (from a ring that fits) or inside circumference (from a strip around your finger).
| US size | Inside diameter (mm) | Inside circumference (mm) |
|---|---|---|
| 3 | 14.1 | 44.3 |
| 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 | 19.0 | 59.7 |
| 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 |
Between two sizes? Choose the larger one.
How to measure
With a ring that fits
- Pick a ring worn on the same finger.
- Measure straight across the inside edge in millimeters.
- Find that diameter in the chart.
With a strip of paper
- Wrap a thin strip of paper around the base of the finger.
- Mark where it overlaps.
- Lay it flat, measure to the mark in millimeters, and find that circumference in the chart.
Fit tips
- Day's end
- Room temperature
- Must pass the knuckle
- Wide bands fit snug
- Measure at the end of the day, at room temperature.
- The ring must slide over the knuckle.
- Wide bands fit more snugly. Consider going up a little.
- Measure two or three times and compare.
Print your own sizer
Our free two-page PDF has this chart, a cut-out sizer strip, and a calibration ruler. Print at 100% (actual size) and check the ruler before you measure.
The most accurate option
Home methods give a good estimate. A fitting with a jeweler is the most accurate way to find a ring size.
Buying a ring as a surprise?
Our sizing guide covers surprise sizing, resizing, and size systems.
