If you are unsure of the ring size for the intended finger, request a complimentary plastic finger sizer which comes in the rebus welcome pack, we post the welcome packs to you free of charge.
If the finished solid metal signet ring needs a slight size adjustment either up or down, to a maximum of 3 sizes either way, we will do this free of charge. Alteration is at the discretion of the jeweller and depends on the size of the ring. Please return to us within 28 days of receipt.
For stone set signet rings, we will arrange a fitting date to try on the ring before the stone is set. The approved finger size not adjustable once the signet ring has been completed.
For our international customers, please use our international ring size conversion to determine the standard british size that corresponds to your international ring size.
Inside Diameter |
Inside Circumference |
Sizes |
MM |
Inches |
MM |
Inches |
British & Australian |
US & Canada |
French & Russian |
German |
Japanese |
Swiss |
9.91 |
0.390 |
31.13 |
1.22 |
- |
0000 |
- |
- |
- |
- |
10.72 |
0.442 |
33.68 |
1.39 |
- |
00 |
- |
- |
- |
- |
11.53 |
0.454 |
36.22 |
1.43 |
- |
0 |
- |
- |
- |
- |
11.95 |
0.474 |
37.54 |
1.49 |
A |
1/2 |
- |
- |
- |
- |
12.18 |
0.482 |
38.26 |
1.51 |
A 1/2 |
3/4 |
- |
- |
- |
- |
12.37 |
0.487 |
38.86 |
1.53 |
B |
1 |
- |
- |
1 |
- |
12.60 |
0.496 |
39.58 |
1.56 |
B 1/2 |
1 1/4 |
- |
- |
- |
- |
12.78 |
0.503 |
40.15 |
1.58 |
C |
1 1/2 |
- |
- |
- |
- |
13.00 |
0.512 |
40.84 |
1.61 |
C 1/2 |
1 3/4 |
- |
- |
- |
- |
13.21 |
0.520 |
41.50 |
1.63 |
D |
2 |
41 1/2 |
13 1/2 |
2 |
1 1/2 |
13.41 |
0.528 |
42.13 |
1.66 |
D 1/2 |
2 1/4 |
- |
- |
- |
- |
13.61 |
0.536 |
42.76 |
1.68 |
E |
2 1/2 |
42 3/4 |
13 3/4 |
3 |
2 3/4 |
13.83 |
0.544 |
43.45 |
1.71 |
E 1/2 |
2 3/4 |
- |
- |
- |
- |
14.05 |
0.553 |
44.14 |
1.74 |
F |
3 |
44 |
14 |
4 |
4 |
14.15 |
0.557 |
44.45 |
1.75 |
F 1/2 |
3 1/8 |
- |
- |
- |
- |
14.25 |
0.561 |
44.77 |
1.76 |
F 3/4 |
3 1/4 |
- |
- |
- |
- |
14.36 |
0.565 |
45.11 |
1.77 |
G |
3 3/8 |
45 1/4 |
- |
5 |
5 1/4 |
14.45 |
0.569 |
45.40 |
1.79 |
G 1/4 |
3 1/2 |
- |
14 1/2 |
- |
- |
14.56 |
0.573 |
45.74 |
1.80 |
G 1/2 |
3 5/8 |
- |
- |
6 |
- |
14.65 |
0.577 |
46.02 |
1.81 |
H |
3 3/4 |
46 1/2 |
- |
- |
6 1/2 |
14.86 |
0.585 |
46.68 |
1.84 |
H 1/2 |
4 |
- |
15 |
7 |
- |
15.04 |
0.592 |
47.25 |
1.86 |
I |
4 1/4 |
47 3/4 |
- |
- |
7 3/4 |
15.27 |
0.601 |
47.97 |
1.89 |
I 1/2 |
4 1/2 |
- |
15 1/4 |
8 |
- |
15.40 |
0.606 |
48.38 |
1.90 |
J |
4 5/8 |
49 |
15 1/2 |
- |
9 |
15.53 |
0.611 |
48.79 |
1.92 |
J 1/4 |
4 3/4 |
- |
- |
- |
- |
15.70 |
0.618 |
49.32 |
1.94 |
J 1/2 |
5 |
- |
15 3/4 |
9 |
- |
15.80 |
0.622 |
49.64 |
1.95 |
K |
5 1/8 |
50 |
- |
- |
10 |
15.90 |
0.626 |
49.95 |
1.97 |
K 1/4 |
5 1/4 |
- |
- |
- |
- |
16.00 |
0.630 |
50.27 |
1.98 |
K 1/2 |
5 3/8 |
- |
- |
10 |
- |
16.10 |
0.634 |
50.58 |
1.99 |
L |
5 1/2 |
51 3/4 |
16 |
- |
11 3/4 |
16.30 |
0.642 |
51.21 |
2.02 |
L 1/4 |
5 3/4 |
- |
- |
- |
- |
16.41 |
0.646 |
51.55 |
2.03 |
L 1/2 |
5 7/8 |
- |
- |
- |
- |
16.51 |
0.650 |
51.87 |
2.04 |
M |
6 |
52 3/4 |
16 1/2 |
12 |
12 3/4 |
16.71 |
0.658 |
52.50 |
2.07 |
M 1/2 |
6 1/4 |
- |
- |
- |
- |
16.92 |
0.666 |
53.16 |
2.09 |
N |
6 1/2 |
54 |
17 |
13 |
14 |
17.13 |
0.674 |
53.82 |
2.12 |
N 1/2 |
6 3/4 |
- |
- |
- |
- |
17.35 |
0.683 |
54.51 |
2.15 |
O |
7 |
55 1/4 |
17 1/4 |
14 |
15 1/4 |
17.45 |
0.687 |
54.82 |
2.16 |
O 1/2 |
7 1/4 |
- |
- |
- |
- |
17.75 |
0.699 |
55.76 |
2.20 |
P |
7 1/2 |
56 1/2 |
17 3/4 |
15 |
16 1/2 |
17.97 |
0.707 |
56.45 |
2.22 |
P 1/2 |
7 3/4 |
- |
- |
- |
- |
18.19 |
0.716 |
57.15 |
2.25 |
Q |
8 |
57 3/4 |
18 |
16 |
17 3/4 |
18.35 |
0.722 |
57.65 |
2.27 |
Q 1/2 |
8 1/4 |
- |
- |
- |
- |
18.53 |
0.729 |
58.21 |
2.29 |
Q 3/4 |
8 1/2 |
- |
18 1/2 |
17 |
- |
18.61 |
0.733 |
58.47 |
2.30 |
R |
8 5/8 |
59 |
- |
- |
19 |
18.69 |
0.736 |
58.72 |
2.31 |
R 1/4 |
8 3/4 |
- |
- |
- |
- |
18.80 |
0.740 |
59.06 |
2.32 |
R 1/2 |
8 7/8 |
- |
- |
- |
- |
18.89 |
0.748 |
59.34 |
2.35 |
R 3/4 |
9 |
- |
19 |
18 |
- |
19.10 |
0.752 |
60.00 |
2.36 |
S |
9 1/8 |
60 1/4 |
- |
- |
20 1/4 |
19.22 |
0.757 |
60.38 |
2.38 |
S 1/4 |
9 1/4 |
- |
- |
- |
- |
19.31 |
0.760 |
60.66 |
2.39 |
S 1/2 |
9 3/8 |
- |
- |
- |
- |
19.41 |
0.764 |
60.98 |
2.40 |
S 3/4 |
9 1/2 |
- |
19 1/2 |
19 |
- |
19.51 |
0.768 |
61.29 |
2.41 |
T |
9 5/8 |
61 1/2 |
- |
- |
21 1/2 |
19.62 |
0.772 |
61.64 |
2.43 |
T 1/4 |
9 3/4 |
- |
- |
- |
- |
19.84 |
0.781 |
62.33 |
2.45 |
T 1/2 |
10 |
- |
20 |
20 |
- |
20.02 |
0.788 |
62.89 |
2.48 |
U |
10 1/4 |
62 3/4 |
- |
21 |
22 3/4 |
20.20 |
0.797 |
63.46 |
2.50 |
U 1/2 |
10 1/2 |
- |
20 1/4 |
22 |
- |
20.32 |
0.800 |
63.84 |
2.51 |
V |
10 5/8 |
63 |
- |
- |
23 3/4 |
20.44 |
0.805 |
64.21 |
2.53 |
V 1/4 |
10 3/4 |
- |
- |
- |
- |
20.68 |
0.814 |
64.97 |
2.56 |
V 1/2 |
11 |
- |
20 3/4 |
23 |
- |
20.76 |
0.817 |
65.22 |
2.57 |
W |
11 1/8 |
65 |
- |
- |
25 |
20.85 |
0.821 |
65.50 |
2.58 |
W 1/4 |
11 1/4 |
- |
- |
- |
- |
20.94 |
0.824 |
65.78 |
2.59 |
W 1/2 |
11 3/8 |
- |
- |
- |
- |
21.08 |
0.830 |
66.22 |
2.61 |
W 3/4 |
11 1/2 |
- |
21 |
24 |
- |
21.18 |
0.834 |
66.54 |
2.62 |
X |
11 5/8 |
66 1/4 |
- |
- |
26 1/4 |
21.24 |
0.836 |
66.73 |
2.63 |
X 1/4 |
11 3/4 |
- |
- |
- |
- |
21.30 |
0.839 |
66.92 |
2.64 |
X 1/2 |
11 7/8 |
- |
- |
- |
- |
21.49 |
0.846 |
67.51 |
2.66 |
Y |
12 |
67 1/2 |
21 1/4 |
25 |
27 1/2 |
21.69 |
0.854 |
68.14 |
2.68 |
Y 1/2 |
12 1/4 |
- |
- |
- |
- |
21.89 |
0.862 |
68.77 |
2.71 |
Z |
12 1/2 |
68 3/4 |
21 3/4 |
26 |
28 3/4 |
22.10 |
0.870 |
69.43 |
2.73 |
Z +1/2 |
12 3/4 |
- |
- |
- |
- |
22.33 |
0.879 |
70.15 |
2.76 |
Z+1 |
13 |
- |
22 |
27 |
- |
22.60 |
0.890 |
71.00 |
2.80 |
Z+1.5 |
13.5 |
- |
- |
- |
- |
22.69 |
0.893 |
71.28 |
2.81 |
Z+2 |
- |
- |
- |
- |
- |
22.92 |
0.902 |
72.00 |
2.83 |
Z+2.5 |
- |
- |
- |
- |
- |
23.06 |
0.908 |
72.45 |
2.85 |
Z+3 |
- |
- |
- |
- |
- |
23.24 |
0.915 |
73.01 |
2.87 |
Z+3.5 |
- |
- |
- |
- |
- |
23.47 |
0.924 |
73.73 |
2.90 |
Z+4 |
- |
- |
- |
- |
- |
23.55 |
0.927 |
73.98 |
2.91 |
Z+4.5 |
- |
- |
- |
- |
- |
23.87 |
0.940 |
74.99 |
2.95 |
Z+5 |
- |
- |
- |
- |
- |
24.27 |
0.956 |
76.25 |
3.00 |
Z+6 |
- |
- |
- |
- |
- |