Ring Size Gide

There are several systems of ring size around the world, to convert to your size please use the chart below.

If you don't know your ring size simply draw around the inside of a ring that you know fits, then measure the diameter. Choose the closest size from the table.
US Ring Size Diameter in Millimeters British System
0.5 - 11.5mm - A
1 - 12.3mm - B
1.5 - 12.7mm - C
2 - 13.1mm - D
2.5 - 13.5mm - E
3 - 13.9mm - F
3.25 - 14.3mm - G
3.75 - 14.7mm - H
4.25 - 15.1mm - I
4.75 - 15.5mm - J
5.25 - 15.9mm - K
5.75 - 16.3mm - L
6.25 - 16.7mm - M
6.75 - 17.1mm - N
7 - 17.5mm - O
7.75 - 18mm - P
8.25 - 18.3mm - Q
8.75 - 18.75mm - R
9.25 - 19.15mm - S
9.75 - 19.55mm - T
10.25 - 19.96mm - U
10.75 - 20.37mm - V
11.25 - 20.78mm - W
11.75 - 21.18mm - X
12.25 - 21.59mm - Y
12.5 - 21.79mm - Z

Still not sure?

We’re happy to send you a disposable ring size guide at no charge. Simply contact us, and supply your name and address, and we’ll pop one in the post.

You can also try a selection of rings and find the perfect size at our retail stores.