Ring Size Guide and Chart - Free Ring Sizer

Ring Size Chart UK

To discover your ring size, simply measure the inside diameter of an existing fitting ring and check the measurement against our handy chart below. If you're still left unsure, we'll be more than happy to help in identifying your correct ring size at your nearest H Samuel store.

Ring Size Circumference (mm)
A 37.8
B 39.1
C 40.4
D 41.7
E 42.9
F 44.2
G 45.5
H 46.8
I 48.0
J 48.7
K 50.0
L 51.2
M 52.5
N 53.8
O 55.1
P 56.3
Q 57.6
R 58.9
S 60.2
T 61.4
U 62.7
V 64.0
W 65.3
X 66.6
Y 67.8
Z 68.5

Ring Size Conversion Chart

Ring Size Conversion

To discover your ring size, simply measure the inside diameter of an existing fitting ring and check the measurement against our handy chart below. If you're still left unsure, we'll be more than happy to help in identifying your correct ring size at your nearest H Samuel store.

Inside diameter (mm) Inside circumference (mm) Ring size
14.48 45.5 G
14.88 46.8 H
15.29 48 I
15.49 48.7 J
15.9 50 K
16.31 51.2 L
16.71 52.5 M
17.12 53.8 N
17.53 55.1 O
17.93 56.3 P
18.34 57.6 Q
18.75 58.9 R
19.15 60.2 S
19.56 61.4 T
19.96 62.7 U
20.37 64 V
20.78 65.3 W
21.18 66.6 X
21.59 67.8 Y
21.79 68.5 Z

US and UK ring sizes

To discover your ring size, simply measure the inside diameter of an existing fitting ring and check the measurement against our handy chart below. If you're still left unsure, we'll be more than happy to help in identifying your correct ring size at your nearest H Samuel store.

US,
CANADA
UK,
AUSTRALIA,
IRELAND,
NEW ZEALAND
4 H
4.25 H.5
4.5 I
4.75 J
5 J 1/2
5.25 K
5.5 K 1/2
5.75 L
6 L 1/2
6.25 M
6.5 M 1/2
6.75 N
7 N 1/2
7.25 O
7.5 O 1/2
7.75 P
8 P 1/2
8.25 Q
8.5 Q 1/2
8.75 R
9 R 1/2
9.25 S
9.5 S 1/2
9.75 T
10 T 1/2
10.25 U
10.5 U 1/2
10.75 V
11 V 1/2
11.25 W
11.5 W 1/2
11.75 X
12 X 1/2
12.25 Y
12.5 Z
12.75 Z 1/2
13
13.25 Z1
13.5
13.75 Z2
14 Z3
14.25
14.5 Z4
14.75
15
15.25
15.5
15.75
16

International Ring Size Chart

International ring size conversation chart UK, USA and Europe

Ring Diameter (Inside) Ring Circumference (Inside) ‹ International Standard Sizes ›
MM Inches MM Inches Britan &
Australia
USA &
Canada
Europe 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 · ·
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 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 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 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 1/4
14.5 0.568 45.4 1.79 G 1/4 3 1/2 · ·
14.6 0.573 45.7 1.80 G 1/2 3 5/8 · ·
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 · ·
15.0 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 · ·
15.4 0.606 48.4 1.90 J 4 5/8 50 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 · ·
15.8 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 · ·
16.1 0.634 50.6 1.99 L 5 1/2 51 3/4 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 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 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 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 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 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 · ·
18.6 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 · ·
19.1 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 · ·
19.5 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 · ·
20.0 0.780 62.9 2.48 U 10 1/4 62 3/4 22 3/4
20.2 0.795 63.5 2.50 U 1/2 10 1/2 · ·
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 · ·
20.8 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 · ·
21.2 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 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 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 · ·
22.6 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 · · ·

ORDER MY FREE RING SIZER

Choosing the right size is very important when you are buying a ring for that special day. We have put together two types of ring size tools for measuring ring sizes of UK, USA, Germany & France for Europe. We will also send printed ring size guide and international ring size conversion chart. Order Free Ring Sizer now.

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DOWNLOADABLE RING SIZE GUIDE

Ring Size Guide

We have put together two popular ring downloadable ring sizer tests. Simply download and print it 100%. It is very simple and easy to use and you can easily determine the ring size at home at your convenience. It will help you shop with confidence and you will be able to choose the right ring size.

Two Types of the most popular Ring Size Tests are provided in our Printable Ring Sizer.

Option A: The Paper Test
Cut our paper ring sizer tool and use it to estimate your ring size.

Option B: The Secret Test
Use the ring that you partner wears to find out the ring size. Simply place the ring on the right circle and determine ring size.

Please note that this is only a guide and will not take into account the style of the ring. For example, if you are choosing a ring with a deep band width, you may need a larger size.

Download Ring Size Guide

WHAT IF THE RING DOESN’T FIT?

Don’t panic, many people do not get it right. Try to estimate or guess in the best possible way. At ABELINI, we offer one free resizing within 30 days. It means we will resize your ring or replace it free of cost as long as it is in pristine condition.

Please note that full eternity and bespoke rings cannot be resized.

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