International Ring Size Conversion Chart

international finger size chart

Official International Ring Size Conversion Chart

Find your ring size using our finger size chart below. Displaying sizes in both metric and imperial for the mosts recognised international standards.  Making a purchase of Diamond Jewellery or wedding rings online or in·store requires that you provide an accurate finger size measurement.  This guide allows you to easily find your correct size or compare your size against other countries if making a purchase using an international website. Be sure to provide the correct size when ordering jewellery purchases as it could lead to costly modifications to your precious items if sent made in the wrong size. If in doubt always ask your retailer to provide further assistance. Be sure to checkout our printable Finger Size Chart or read more below.


Find your ring size with our International Conversion Chart

Ring Diameter (Inside) Ring Circumference (Inside) ‹ International Standard Sizes ›
MM Inches MM Inches Britan & Australia USA & Canada Europe German/Russian/Asia India/China/Japan Netherlands/Swiss
9.9 0.390 31.1 1.22 · 0000 · · · ·
10.7 0.442 33.7 1.39 · 00 · · · ·
11.5 0.454 36.2 1.43 · 0 · · · ·
12.0 0.470 37.5 1.50 A 1/2 · · · ·
12.2 0.479 38.3 1.51 A 1/2 3/4 · · · ·
12.4 0.487 38.9 1.53 B 1 · · 1 ·
12.6 0.506 39.6 1.56 B 1/2 1 1/4 · · · ·
12.8 0.503 40.2 1.58 C 1 1/2 · · · ·
13.0 0.511 40.8 1.61 C 1/2 1 3/4 · · · ·
13.2 0.520 41.5 1.63 D 2 41 1/2 13 1/2 2 1 1/2
13.4 0.528 42.1 1.66 D 1/2 2 1/4 · · · ·
13.6 0.536 42.8 1.68 E 2 1/2 42 3/4 13 3/4 3 2 3/4
13.8 0.544 43.5 1.71 E 1/2 2 3/4 · · · ·
14.0 0.553 44.1 1.74 F 3 44 14 4 4
14.2 0.557 44.5 1.75 F 1/2 3 1/8 · · · ·
14.3 0.561 44.8 1.76 F 3/4 3 1/4 · · · ·
14.4 0.565 45.1 1.77 G 3 3/8 45 1/4 · 5 5 1/4
14.5 0.568 45.4 1.79 G 1/4 3 1/2 · 14 1/2 · ·
14.6 0.573 45.7 1.80 G 1/2 3 5/8 · · 6 ·
14.7 0.576 46.0 1.81 H 3 3/4 46 1/2 · · 6 1/2
14.9 0.585 46.7 1.84 H 1/2 4 · 15 7 ·
15.0 0.592 47.3 1.86 I 4 1/4 47 3/4 · · 7 3/4
15.3 0.601 48.0 1.89 I 1/2 4 1/2 · 15 1/4 8 ·
15.4 0.606 48.4 1.90 J 4 5/8 50 15 1/2 · 9
15.5 0.611 48.8 1.92 J 1/4 4 3/4 · · · ·
15.7 0.618 50.3 1.94 J 1/2 5 · 15 3/4 9 ·
15.8 0.622 50.6 1.95 K 5 1/8 50 · · 10
15.9 0.625 50.0 1.97 K 1/4 5 1/4 · · · ·
16.0 0.630 50.3 1.98 K 1/2 5 3/8 · · 10 ·
16.1 0.634 50.6 1.99 L 5 1/2 51 3/4 16 · 11 3/4
16.3 0.642 51.2 2.02 L 1/4 5 3/4 · · · ·
16.4 0.646 51.6 2.03 L 1/2 5 7/8 · · · ·
16.5 0.650 51.9 2.04 M 6 52 3/4 16 1/2 12 12 3/4
16.7 0.658 52.5 2.07 M 1/2 6 1/4 · · · ·
16.9 0.666 53.2 2.09 N 6 1/2 54 17 13 14
17.1 0.674 53.8 2.12 N 1/2 6 3/4 · · · ·
17.4 0.683 54.5 2.15 O 7 55 1/4 17 1/4 14 15 1/4
17.5 0.687 54.8 2.16 O 1/2 7 1/4 · · · ·
17.8 0.698 55.8 2.20 P 7 1/2 56 1/2 17 3/4 15 16 1/2
18.0 0.707 56.5 2.22 P 1/2 7 3/4 · · · ·
18.2 0.716 57.1 2.25 Q 8 57 3/4 18 16 17 3/4
18.4 0.722 57.7 2.27 Q 1/2 8 1/4 · · · ·
18.5 0.729 58.2 2.29 Q 3/4 8 1/2 · 18 1/2 17 ·
18.6 0.733 58.5 2.30 R 8 5/8 59 · · 19
18.7 0.736 58.7 2.31 R 1/4 8 3/4 · · · ·
18.8 0.740 59.1 2.32 R 1/2 8 7/8 · · · ·
18.9 0.743 59.3 2.35 R 3/4 9 · 19 18 ·
19.1 0.752 60.0 2.36 S 9 1/8 60 1/4 · · 20 1/4
19.2 0.757 60.4 2.38 S 1/4 9 1/4 · · · ·
19.3 0.760 60.7 2.39 S 1/2 9 3/8 · · · ·
19.4 0.764 61.0 2.40 S 3/4 9 1/2 · 19 1/2 19 ·
19.5 0.768 61.3 2.41 T 9 5/8 61 1/2 · · 21 1/2
19.6 0.772 61.6 2.43 T 1/4 9 3/4 · · · ·
19.8 0.781 62.3 2.45 T 1/2 10 · 20 20 ·
20.0 0.780 62.9 2.48 U 10 1/4 62 3/4 · 21 22 3/4
20.2 0.795 63.5 2.50 U 1/2 10 1/2 · 20 1/4 22 ·
20.3 0.800 63.8 2.51 V 10 5/8 63 · · 23 3/4
20.4 0.805 64.2 2.53 V 1/4 10 3/4 · · · ·
20.7 0.814 65.0 2.56 V 1/2 11 · 20 3/4 23 ·
20.8 0.817 65.2 2.57 W 11 1/8 65 · · 25
20.9 0.821 65.5 2.58 W 1/4 11 1/4 · · · ·
20.9 0.824 65.8 2.59 W 1/2 11 3/8 · · · ·
21.0 0.830 66.2 2.61 W 3/4 11 1/2 · 21 24 ·
21.2 0.834 66.5 2.62 X 11 5/8 66 1/4 · · 26 1/4
21.2 0.836 66.7 2.63 X 1/4 11 3/4 · · · ·
21.3 0.838 66.9 2.64 X 1/2 11 7/8 · · · ·
21.5 0.846 67.5 2.66 Y 12 67 1/2 21 1/4 25 27 1/2
21.7 0.854 68.1 2.68 Y 1/2 12 1/4 · · · ·
21.9 0.861 68.8 2.71 Z 12 1/2 68 3/4 21 3/4 26 28 3/4
22.1 0.870 69.4 2.73 Z +1/2 12 3/4 · · · ·
22.3 0.879 70.2 2.76 Z+1 13 · 22 27 ·
22.6 0.890 71.0 2.80 Z+1.5 13.5 · · · ·
22.7 0.893 71.3 2.81 Z+2 · · · · ·
22.9 0.902 72.0 2.83 Z+2.5 · · · · ·
23.0 0.908 72.5 2.85 Z+3 · · · · ·
23.3 0.915 73.0 2.87 Z+3.5 · · · · ·
23.5 0.924 73.7 2.90 Z+4 · · · · ·
23.6 0.927 74.0 2.91 Z+4.5 · · · · ·
23.9 0.940 75.0 2.95 Z+5 · · · · ·
24.3 0.955 76.2 3.00 Z+6 · · · · ·


Finger Size Measuring tool

To help you measure your finger size at home our friends at www.jewellerygraphics.net have provided a handy printable measuring tool that can be wrapped around your finger to give an approximate size. Click the image below to to load the page, print and follow the instructions.

finger size measuring tool

Download and Print


Questions and Tips about your finger size

1: Do all jewellers use the same measurements?

In effect yes but different countries use a different scale, like the difference between mm and inches when measuring something. Our handy finger size conversion chart above allows you to measure in mm and inches and then work out what your finger size is depending on the country you are purchasing your ring from. Most good jewellery retailers online will be able to convert for you if in doubt.

2: Is there a difference between men and women’s finger sizes?

No. All fingers whether male or female use the same scale. Mens hands just tend to me larger than women’s and hence will fall under the bigger sizes. Think of it like your foot size when buying shoes. All feet use the same scale. This is the same for finger sizes.

3: Can I get my ring resized if it’s too loose or too tight?

Yes you can. Some retailers may offer this service for free if it’s a new purchase, others may charge a little. There is a great video here demonstrating a ring re-size. If you inherit a ring or purchase a preloved ring you can go to any reputable jewellery retailer and they will offer a re-sizing service to better fit your finger.

4: Does the width of the band make a difference to my finger size?

If buying a wide wedding band it may be neccesary to add half a finger size to your measurement so that it better fits your finger. Most retail stores will have a ring sizing tool in-store for you to try on various sizes and see what is the most comfortable.