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How to Measure Your Ring Size (Guide, Tips & Sizing Chart)

Selecting the perfect ring starts with finding the correct size. A properly sized ring is comfortable, secure, and fits just right. Use the methods below to help you determine your correct size.

Step 1: Using a Pre-Existing Ring (Recommended)

If you already own a ring that fits perfectly, this is the ideal and most accurate method.

Option 1: Use a Ring Sizing App

For an even easier solution, download a ring sizing app from the Google Play Store or Apple App Store. Simply search for apps like "Ring Size Finder" or "Ring Sizer". Once downloaded:

  • Place your existing ring on your phone screen.
  • Follow the app’s instructions to accurately match the ring size.

This method is hassle-free and precise, especially if you already have a ring that fits.

Option 2: Measure the Diameter of Your Ring

If you don't want to use an app, you can measure the ring diameter using a simple tool:

  • Caliper Method: Use a caliper to measure the widest internal distance of the ring in millimeters. It should look like this:

    Caliper Measurement Example
     
  • Ruler Method: If you don’t have a caliper, place the ring on a ruler and measure the internal diameter across its widest point:

    Ruler Measurement Example

Once you've obtained the diameter, use the table below to find your ring size. The diameter directly corresponds to the ring size listed in the first column.

Step 2: Measure Your Finger

If you don’t have a pre-existing ring, you can measure your finger using a flexible tape measure or a piece of string. Here’s how:

  • Wrap the tape measure or string around the finger where you want to wear the ring.
  • Ensure it feels comfortable – not too loose or too tight.
  • Mark the length of the tape or string and measure it in millimeters.
Measuring Your Finger Example

Take this measurement and match it to the circumference column in the table below to determine your size.

Ring Sizing Table

Note: On our website, the Ring Size corresponds to the "Diameter" column measurement in millimeters.

Diameter (mm) Circumference (mm) USA UK EU
14.1 44 3 F 6
14.5 45 3.5 G 7
14.9 46-47 4 H 8
15.3 48 4.5 I 9
15.7 49 5 J 10
16.1 50-51 5.5 K 11-12
16.5 52 6 L 13
16.9 53 6.5 M 14
17.3 54 7 N 15
17.7 55-56 7.5 O 16
18.1 57 8 P 17
18.5 58 8.5 Q 18
18.9 59 9 R 19-20
19.4 60-61 9.5 S 21
19.8 62 10 T 22
20.2 63 10.5 U 23-24
20.6 64-65 11 V 25
21.0 66 11.5 W 26
21.4 67 12 X 27
21.8 68-69 12.5 Y 28
22.2 70 13 Z 29-30
22.6 71 13.5   31
23.0 72 14   32
23.4 73-74 14.5   33
23.8 75 15   34
24.2 76 15.5   35
24.6 77-78 16   36


Helpful Tips for Accurate Sizing

  • Avoid measuring your finger when it’s cold, as fingers are usually smaller in colder conditions.
  • Measure your ring or finger multiple times to ensure accuracy.
  • If you’re in between sizes, we recommend selecting the larger size for a better fit.

Need Assistance?

If you still need help or want a second opinion – whether for yourself or someone else – feel free to reach out. Our team is happy to assist you in finding the perfect fit.