RING SIZE GUIDE

How to Determine your U.S. Ring Size

FIND A LOCAL JEWELER

It’s the safest and most reliable way to measure the size of your finger. Visit a local jewelry store because jewelers in the US use the same standard sizes. Even if you are outside the US, your local jeweler should have a sizing conversion chart to understand US ring sizing.

MEASURE AN EXISTING RING

  1. Use a ring that fits the desired finger
  2. Measure the internal diameter of the ring (in mm). Ensure your ruler starts at the 0mm mark
  3. Use the below chart to determine your ring size.
Wrist Size Chart
INTERNAL DIAMETER (MM) US/CAN RING SIZE
14.1 3
14.9 4
15.7 5
16.5 6
17.3 7
18.1 8
19.0 9
19.8 10
20.6 11
21.4 12
22.2 13

RING SIZING TIPS

Different styles of rings may fit differently on the same finger, so keep the following in mind as you’re sizing:

  • Your ring should fit snug around the base of your finger without any bulging or leaving indent marks.
  • Wider bands (compared to a dainty stacker band) have less “give” for slipping over your knuckle, so you may need to increase the ring size. Consider ordering a half size larger than you usually would for bands 2mm or thicker. This is because wider rings need more space to allow your fingers to flex.
  • Stacking rings need to be within 1/4 a size of each other to stack well.
  • Rings with open bands are slightly adjustable. You will be able to pull the ring apart a touch to adjust the fit, but it only gives you a half size or so before it starts to affect the look of the ring.
  • If you're between sizes, it's better to go up than down.
  • Your ring size can actually change slightly across seasons. For instance, during warmer months, the heat can cause fingers to swell, while colder weather may lead to contraction. While various weather-related factors can lead to subtle variations in ring sizing, these changes are typically temporary and reversible.