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Working out your UK Ring Size

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When it comes to buying rings, figuring out your ring size can sometimes be a bit tricky, so I've put together a couple of tips to help you work your own ring size at home. 
Ring sizers are also available on the website here.

Using a Ring that already fits you

If you already have a ring that you know fits the right finger, you can use this to work out your ring size. All you need to do is measure the inside diameter of the ring, which is the distance across the circle, through the central point. 
Then use the conversion chart below to get your UK ring size.

Measuring the circumference of your finger

If you don't have a ring that you can use to workout the diameter, then you will need to measure the circumference of your finger. To do this you will need a length of string or thin strip of paper.
Firstly wrap the string/paper around the part of your finger where the ring will sit, and mark where it overlaps itself. You then need to measure in millimetres from the end of the string/paper to the mark you made.
Then use the conversion chart below to get your UK ring size.
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When using paper for this method, I often find it helpful to then cut where you marked and tape the ends together to make a 'ring' which you can then try on to double check the sizing and adjust if necessary.
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(When ordering a wider band ring, it is advised to order a size up)
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UK Ring Size Conversion Chart

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UK Ring Size Inside Diameter (mm) Inside Circumference (mm)
A 11.95 37.54
A1/2 12.18 38.26
B 12.37 38.86
B1/2  12.60 39.58
C 12.78 40.15
C1/2 13.00 40.84
D 13.21 41.50
D1/2 13.41 42.13
E 13.61 42.76
E1/2 13.83 43.45
F 14.05 44.14
F1/2 14.15 44.45
G 14.36 45.11
G1/2 14.56 45.74
H 14.65 46.02
H1/2 14.86 46.68
I 15.04 47.25
I1/2 15.27 47.97
J 15.40 48.38
J1/2 15.70 49.32
K 15.80 49.64
K1/2 16.00 50.27
L 16.10 50.58
L1/2 16.41 51.55
M 16.51 51.87
M1/2 16.71 52.50
N 16.92 53.16
N1/2 17.13 53.82
O 17.35 54.51
O1/2 17.45 54.82
P 17.75 55.76
P1/2 17.97 56.45
Q 18.19 57.15
Q/12 18.35 57.65
R 18.61 58.47
R1/2 18.80 59.06
S 19.10 60.00
S1/2 19.31 60.66
T 19.51 61.29
T1/2 19.84 62.33
U 20.02 62.89
U1/2 20.20 63.46
V 20.32 63.84
V1/2 20.68 64.97
W 20.76 65.22
W1/2 20.94 65.78
X 21.18 66.54
X1/2 21.30 66.92
Y 21.49 67.51
Y1/2 21.69 68.14
Z 21.89 68.77
Z1/2 22.10 69.43
Z+1 22.33 70.15
Z+2 22.69 71.28
Z+3 23.06 72.45
Z+4 23.47 73.73

 

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