Size Guide
Ring:
Selecting the right ring size is essential for a perfect fit. To ensure a perfect fit, we invite you to visit us for an accurate ring measurement.
If visiting isn't an option, we've created a detailed Tatum to US Size Conversion Chart. This chart provides equivalent sizes for the UK and EU, along with the inner diameters for each size.
Measuring Your Ring Size
To determine your ring size, use a tape measure, a piece of string, or a strip of paper. Wrap it around the finger where you plan to wear the ring, considering the position if you're creating a ring stack. Mark the spot where the ends meet, then lay the string or paper flat and measure the length up to the mark. Use our size chart to match the measurement and find your correct ring size.
Measure an Existing Ring
Select a ring that fits you comfortably and measure its interior diameter in millimeters (mm). Then, refer to our measurement chart to find the closest size that corresponds to the diameter.
Tatum Size |
US Size |
UK Size |
EU Size |
Ø Inside Diameter |
5 |
3 |
F |
44 |
Ø 14.0 mm |
6 |
3,5 |
G |
45 |
Ø 14.5 mm |
7 |
4 |
H |
46 |
Ø 15.0 mm |
8 |
4,5 |
I |
48 |
Ø 15.3 mm |
9 |
5 |
J |
49 |
Ø 15.7 mm |
10 |
5,5 |
K |
50 |
Ø 16.0 mm |
11 |
6 |
L |
52 |
Ø 16.5 mm |
12 |
6,5 |
M |
53 |
Ø 17.0 mm |
13 |
7 |
N |
54 |
Ø 17.5 mm |
14 |
7,5 |
O |
55 |
Ø 17.8 mm |
15 |
8 |
P |
57 |
Ø 18.2 mm |
16 |
8,5 |
Q |
58 |
Ø 18.5 mm |
17 |
9 |
R |
59 |
Ø 19.0 mm |
18 |
9,5 |
S |
60 |
Ø 19.5 mm |
19 |
10 |
T |
61 |
Ø 20.0 mm |
20 |
10,5 |
U |
62 |
Ø 20.5 mm |
21 |
11 |
V |
63 |
Ø 21.0 mm |
22 |
11,5 |
W |
64 |
Ø 21.5 mm |
23 |
12 |
X |
65 |
Ø 22.0 mm |
24 |
12,5 |
Y |
66 |
Ø 22.5 mm |
25 |
13 |
Z |
67 |
Ø 23.0 mm |