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Ring Size Chart (US Sizes)

Ring Size. Diameter (mm) Circumference (mm)

4. 14.8 mm. 46.8 mm

5 15.7 mm 49.3 mm

6 16.5 mm 51.9 mm

7 17.3 mm 54.4 mm

8 18.1 mm 57.0 mm

9. 18.9 mm 59.5 mm

10 19.8 mm 62.1 mm

11. 20.6 mm 64.6 mm

Method 2: Using a String or Paper

1. Wrap a piece of string or a strip of paper around the base of the finger.

2. Mark where the string or paper overlaps.

3. Measure the length of the string or paper in millimeters.

4. Use this circumference measurement to find the ring size.

Tips

• Measure fingers at the end of the day when they’re largest.

• Avoid measuring cold fingers as they might be smaller.

• If between sizes, go up for comfort.

Method 1: Using an Existing Ring

1. Take a ring that already fits the intended finger.

2. Measure the diameter (inside edge to inside edge) in millimeters.

3. Match the diameter to a size chart.