Ring Size Guide

Here’s a ring size guide to help you determine the right size for your finger. Ring sizes are typically measured in U.S. and Canadian sizing, but different countries have their own standards. Below is the U.S. size system, along with a few tips on how to measure your ring size.

U.S. Ring Size Chart (Standard)

Ring Size (U.S.) Diameter (mm) Circumference (mm)
3 14.0 44.2
3.5 14.3 44.8
4 14.6 45.5
4.5 14.9 46.1
5 15.2 46.8
5.5 15.6 47.4
6 15.9 48.0
6.5 16.2 48.6
7 16.5 49.3
7.5 16.9 49.9
8 17.2 50.6
8.5 17.5 51.2
9 17.8 51.8
9.5 18.1 52.4
10 18.4 53.1
10.5 18.7 53.7
11 19.0 54.3
11.5 19.3 54.9
12 19.7 55.5
12.5 20.0 56.2
13 20.3 56.8

How to Measure Your Ring Size

1. Use a Ring Sizer:

  • You can purchase a ring sizer (either a set of plastic rings or a tape measure-like sizer) to find the exact size. This is one of the most accurate methods.

2. Measure an Existing Ring:

  • If you have a ring that fits well on the intended finger, you can measure its diameter using a ruler or caliper. Compare this measurement with the size chart above to determine the ring size.

3. Use a String or Paper Strip:

  • Wrap a piece of string or paper around your finger where the ring will sit.
  • Mark where the ends meet and then measure the length with a ruler.
  • Use the circumference from the size chart above to find the matching size.

4. Visit a Jeweler:

  • If you're unsure or if it's a surprise, a jeweler can accurately measure your finger with professional tools.

Important Tips:

  • Measure at the end of the day when your fingers are slightly larger due to normal swelling (especially in warmer temperatures).
  • If your knuckle is larger than the base of your finger, consider getting a half size larger to ensure comfort.
  • Women’s average ring size is typically around 6-7.
  • Men’s average ring size is typically around 9-10.

This guide should help you determine the most accurate ring size for you or the recipient!

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