How to Measure Ring Size

Discovering your ring size at home is effortless with our complimentary ring sizer, printable ring size chart, and step-by-step methods to ensure you find the perfect fit.

Request a Free Ring Sizer

We'll send you a complimentary, unisex, and reusable ring sizer by mail, allowing you to accurately determine the most comfortable size for you.
Simply wrap our sizer around the finger you wish to measure, adjusting it to the size that feels just right. The ideal size should be snug enough to stay in place but loose enough to slide over the knuckle without excessive resistance.

How to Measure Ring Size at Home

Discovering your ring size at home is simple with these three easy methods:

1.Printable Ring Sizer

2.The String Method

3.Measuring an Existing Ring

These methods require our printable Ring Sizing Guide. Before printing the sizing guide, ensure that page scaling is set to "none" and once printed, confirm the paper size with the legend in our guide to guarantee accuracy.

Download the Printable Sizer & Chart

Method 1: Print a Ring Sizer

What you'll need:   
1. Printer & paper   
2. Scissors   

Steps:
1. Print the Printable Ring Sizing Guide. Set page scaling to "none" and confirm the paper size with the legend in our guide to guarantee accuracy.
2. Cut out the ring sizer and cut a slit as indicated by the vertical line.
3. lnsert the pointy tip of the paper through the slit so the numbers are visible to you.
4. Place the paper around the ring finger and gently tug until you have a secure, comfortable fit.
5. Make note of the number that lines up with the slit - this is your ring size!

* Keep in mind that quarter sizes are also available if your sizer indicates that you are between whole and half sizes.

Method 2: Create Your Own Ring Sizer

What you'll need:   
1. String, yarn, floss, or a thin strip of paper    
2. Pen or marker    
3. Straight Ruler  

Steps:   
1. Measure and cut a piece of string to at least 3 inches long.
2. Wrap it around the base of the finger you plan to wear your ring on.
3. Mark where the ends overlap.
4. Lay the string flat and use a ruler to measure the length in millimeters.
5. Use the Ring Size Conversion Chart below/above to find the corresponding ring size.

Method 3: Measure an Existing Ring with Our Chart

What you'll need:   
1. Printer & paper
2. Scissors
3. An existing ring

Steps:   
1. Print the Printable Ring Sizing Guide. Set page scaling to "none" and confirm the paper size with the legend in our guide to guarantee accuracy.
2. Choose a ring that correctly fits the intended finger.
3. Lay the ring over each size circle within the chart until you can closely match the inside edge to one of the circles on the guide. If the ring falls between two sizes, choose the quarter size between them.

Ring Size Chart

Finding your perfect fit is simple. Lucenjuri rings are sized in US standards, please use the guide below to convert your measurements to international sizing or confirm your ring size by finger circumference.

US & CA Sizes Inside Circumference UK, Ireland, Australia, New Zealand Germany France, Spain Japan Italy, Netherlands, Switzerland
IN MM
3 1.74 44.2 F 14 44 4 4
3 1/4 1.77 44.8 F.5 14.25 44.625 --- 4.625
3 1/2 1.79 45.5 G 14.5 45.25 5 5.25
3 3/4 1.82 46.1 G.5 14.75 45.875 6 5.875
4 1.84 46.8 H 15 46.5 7 6.5
4 1/4 1.87 47.4 H.5 15.25 47.125 --- 7.125
4 1/2 1.89 48 I 15.5 47.75 8 7.75
4 3/4 1.92 48.7 J --- 48.375 --- 8.375
5 1.94 49.3 J.5 15.75 49 9 9
5 1/4 1.97 50 K 16 49.625 --- 9.625
5 1/2 1.99 50.6 K.5 16.25 50.25 10 10.25
5 3/4 2.02 51.2 L --- 50.875 11 10.875
6 2.04 51.9 L.5 16.5 51.5 12 11.5
6 1/4 2.07 52.5 M 16.75 52.125 --- 12.125
6 1/2 2.09 53.1 M.5 17 52.75 13 12.75
6 3/4 2.12 53.8 N --- 53.375 --- 13.375
7 2.14 54.4 N.5 17.25 54 14 14
7 1/4 2.17 55.1 O 17.5 54.625 --- 14.625
7 1/2 2.19 55.7 O.5 17.75 55.25 15 15.25
7 3/4 2.22 56.3 P --- 55.875 --- 15.875
8 2.24 57 P.5 18 56.5 16 16.5
8 1/4 2.27 57.6 Q 18.25 57.125 --- 7.125
8 1/2 2.29 58.3 Q.5 18.5 57.75 17 17.75
8 3/4 2.32 58.9 R 18.75 58.375 --- 18.375
9 2.34 59.5 R.5 19 59 18 19
9 1/4 2.37 60.2 S 19.25 59.625 --- 19.625
9 1/2 2.39 60.8 S.5 19.5 60.25 19 20.25
9 3/4 2.42 61.4 T 19.75 60.875 --- 20.875
10 2.44 62.1 T.5 20 61.5 20 21.25
10 1/4 2.47 62.7 U 20.25 62.125 21 22.125
10 1/2 2.49 63.4 U.5 20.5 62.75 22 22.75
10 3/4 2.52 64 V --- 63.375 --- 23.375
11 2.54 64.6 V.5 20.75 64 23 24
11 1/4 2.57 65.3 W --- 64.625 --- 24.625
11 1/2 2.59 65.9 W.5 21 65.25 24 25.25
11 3/4 2.62 66.6 X --- 65.875 --- 25.875
12 2.65 67.2 X.5 21.25 66.5 25 26.5
12 1/4 2.68 68.1 Y 21.5 67.125 --- 27.125
12 1/2 2.71 68.5 Z 21.75 67.75 26 27.75
12 3/4 2.72 69.1 Z.5 --- 68.375 --- 28.375
13 2.75 69.7 --- 22 69 27 29
US & CA Sizes
3
3 1/4
3 1/2
3 3/4
4
4 1/4
4 1/2
4 3/4
5
5 1/4
5 1/2
5 3/4
6
6 1/4
6 1/2
6 3/4
7
7 1/4
7 1/2
7 3/4
8
8 1/4
8 1/2
8 3/4
9
9 1/4
9 1/2
9 3/4
10
10 1/4
10 1/2
10 3/4
11
11 1/4
11 1/2
11 3/4
12
12 1/4
12 1/2
12 3/4
13