Ring Sizing Guide

Finding the right ring size ensures your custom piece fits beautifully and comfortably.
Follow the steps below, or visit a local jeweler for the most accurate measurement.

• Use a strip of paper or non-stretch string.
• Wrap it around the base of your finger (not too tight).
• Mark where the end meets the loop.
• Measure that length in millimeters.
• Use the chart below to find your US ring size.

Tips:

• Measure at the end of the day when your fingers are largest.
• Avoid measuring cold fingers, as they can be up to half a size smaller.

Ring Size Chart (inside circumference)

U.S. Size	Circumference (mm)
4	46.8 mm
5	49.3 mm
6	51.9 mm
7	54.4 mm
8	57.0 mm
9	59.5 mm
10	62.1 mm
11	64.6 mm
12	67.2 mm

 

Need help? Email sarah@sarahcatherine.co — I'm happy to guide you.