The AR Ring Sizer
A reusable plastic sizer that measures any finger accurately from home.
$6.00
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METHOD ONE
Measure Your Finger
- Cut a thin strip of paper or use a flexible measuring tape. String works too.
- Wrap it snugly around the base of the finger you plan to wear your ring on. It should sit comfortably, not tight.
- Mark where the paper meets itself, then lay it flat and measure that length in millimeters using the mm side of a standard ruler.
- Match your measurement to the circumference column in the chart below. If you fall between sizes, choose the larger one.
METHOD TWO
Measure an Existing Ring
- Choose a ring that fits the intended finger well, ideally one worn on the same hand and finger position.
- Using a ruler, measure straight across the inside of the ring in millimeters, not the outer edge.
- Match your measurement to the diameter column in the chart below.
- This method is ideal when purchasing as a gift. Borrow a ring they already wear on the right finger.
SIZE REFERENCE
Ring Size Chart
| US SIZE |
CIRCUMFERENCE (MM) |
DIAMETER (MM) |
| 3 | 44.2 | 14.1 |
| 3.5 | 45.5 | 14.5 |
| 4 | 46.8 | 14.9 |
| 4.5 | 48.0 | 15.3 |
| 5 | 49.5 | 15.7 |
| 5.5 | 50.6 | 16.1 |
| 6 | 51.9 | 16.5 |
| 6.5 | 53.1 | 16.9 |
| 7 | 54.4 | 17.3 |
| 7.5 | 55.7 | 17.7 |
| 8 | 57.0 | 18.1 |
| 8.5 | 58.3 | 18.5 |
| 9 | 59.5 | 18.9 |
| 9.5 | 60.8 | 19.4 |
| 10 | 62.1 | 19.8 |
| 10.5 | 63.4 | 20.2 |
| 11 | 64.6 | 20.6 |
| 11.5 | 65.9 | 21.0 |
| 12 | 67.2 | 21.4 |
| 12.5 | 68.5 | 21.8 |
| 13 | 69.7 | 22.2 |
A few things to keep in mind: Fingers are often slightly larger in warm weather and at the end of the day. For rings with wide bands, we recommend sizing up by half a size. If you're buying a stacking ring, try it on with the rings you already wear to check the fit together.
we’re here to help
Not sure of your size? Talk to an expert.
One-on-one with an AR stylist, virtual or in our Buffalo studio.
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