Size chart

A little care in measuring makes all the difference.
Find your US ring size with our guide below.

Find your ring size

US sizing · millimeters
Inside diameter —mm
Inside circumference —mm

Measurements are approximate. Use this chart as a guide and confirm your fit with a jeweler.

Start with a professional fitting

A jeweler can measure the finger you plan to wear your ring on and help you check the fit over your knuckle. This is the most reliable starting point.

Measure a ring you already wear

Choose a round ring that fits the same finger comfortably. Measure straight across the inside, from edge to edge, in millimeters. Do not include the metal.

How to measure the inside diameter of a ring The measurement runs across the center of the ring opening between its two inner edges. The band is excluded. Inside diameter
Illustration only — not a printable sizing tool.

Match your measurement to the chart. If it falls between sizes, ask a jeweler to confirm the best fit before ordering.

Ring size chart

33 sizes
Approximate US ring size, inside diameter and inside circumference in millimeters
US size Diameter
mm
Circumference
mm
3 14.1 44.2
3.25 14.3 44.8
3.5 14.5 45.5
3.75 14.7 46.1
4 14.9 46.8
4.25 15.1 47.4
4.5 15.3 48.0
4.75 15.5 48.7
5 15.7 49.3
5.25 15.9 50.0
5.5 16.1 50.6
5.75 16.3 51.2
6 16.5 51.9
6.25 16.7 52.5
6.5 16.9 53.1
6.75 17.1 53.8
7 17.3 54.4
7.25 17.5 55.1
7.5 17.7 55.7
7.75 17.9 56.3
8 18.1 57.0
8.25 18.3 57.6
8.5 18.5 58.3
8.75 18.7 58.9
9 18.9 59.5
9.25 19.2 60.2
9.5 19.4 60.8
9.75 19.6 61.4
10 19.8 62.1
10.25 20.0 62.7
10.5 20.2 63.4
10.75 20.4 64.0
11 20.6 64.6

All measurements are approximate. Ring shape, band width and individual comfort can affect the fit.

A few things to keep in mind

Choose the right finger

Check the finger and hand you will wear the ring on. A ring that fits one finger may not fit another.

Consider the band

Wider bands and rings worn together can feel different from a single narrow band. Try a similar width when checking your size.

When you are unsure

Have your measurement checked by a jeweler. For a question about a particular design, contact us before ordering.

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