Ring Size Guide

Finding the right size is easy. Our Comfort Rings use US ring sizes, ranging from Size 7 to Size 14.

If you're already familiar with your ring size, simply use the conversion chart below. If not, follow our simple measuring guide to find the perfect fit from home.

 

UK to US Ring Size Conversion

UK Size US Size
N 7
O 7.5
P 8
Q 8.5
R 9
S 9.5
T 10
U 10.5
V 11
W 11.5
X 12
Y 12.5
Z 13
Z+1 13.5
Z+2 14

 


How to Measure Your Ring Size at Home

Option 1 – Measure an Existing Ring (Most Accurate)

If you already own a ring that fits comfortably on the finger you'd like to wear your Comfort Ring on:

 

  1. Lay the ring on a flat surface.
  2. Measure the inside diameter of the ring using a ruler or digital calipers.
  3. Use the chart below to find your corresponding US size.

 

Inside Diameter US Size
17.3 mm 7
18.1 mm 8
18.9 mm 9
19.8 mm 10
20.6 mm 11
21.4 mm 12
22.2 mm 13
23.0 mm 14

 


Option 2 – Measure Your Finger

You'll need:

 

  • A thin strip of paper or string
  • A ruler
  • A pen

 

  1. Wrap the paper or string around the base of your finger.
  2. Make sure it's snug but not tight.
  3. Mark where the ends meet.
  4. Measure the length in millimetres.
  5. Compare your measurement with the chart below.

 

Finger Circumference US Size
54.5 mm 7
57.0 mm 8
59.5 mm 9
62.1 mm 10
64.6 mm 11
67.2 mm 12
69.7 mm 13
72.3 mm 14

 


Helpful Tips

✔ Measure your finger at the end of the day, when it's at its largest.

✔ Cold fingers measure smaller, while warm fingers measure larger.

✔ If you're between two sizes, we generally recommend choosing the larger size for maximum comfort.

✔ Your dominant hand is often slightly larger than your other hand.

✔ Comfort Rings are made from flexible premium silicone, giving them a little more forgiveness than traditional metal rings while still providing a secure fit.

 

 

Want a printable to-scale guide as shown below? Download our Ring Sizer here

A printed ring sizer guide from Jestoddity showing how to measure ring size, with size charts, instructions, and diagrams on a white background.


Still Unsure?

If you're between sizes or need advice, our team is always happy to help. Get in touch before ordering and we'll help you choose the perfect fit.